Potential Farm Sector Effects of 2009 H1N1 
“Swine Flu”: Questions and Answers  
Renée Johnson 
Specialist in Agricultural Policy 
September 4, 2009 
Congressional Research Service
7-5700 
www.crs.gov 
R40575 
CRS Report for Congress
P
  repared for Members and Committees of Congress        
Potential Farm Sector Effects of 2009 H1N1 “Swine Flu”: Questions and Answers  
 
Summary 
In March 2009, a number of cases of an influenza-like illness and severe respiratory infections in 
humans were reported in parts of Mexico. These cases were later confirmed to be a strain of 
influenza A(H1N1), commonly referred to as “swine flu” and later called 2009 H1N1. By the end 
of April 2009, confirmed human cases of 2009 H1N1 infection were reported throughout Mexico, 
in parts of the United States, and in several countries worldwide.  
Reports of the outbreak—coupled with the use of the initial moniker “swine flu”—initially 
caused a downturn in domestic and international pork markets. Domestic pork demand and prices 
dropped sharply because of consumer fears that eating pork might result in infection. Several 
pork-importing countries also began to consider instituting trade bans and restrictions on live pig 
and pork imports from certain countries, including the United States. This initial reaction further 
rippled throughout pork and other agricultural markets, such as feed grain and other livestock 
markets, as market analysts attempted to speculate about the short- and long-term consequences 
of a decline in pork demand and prices.  
The Centers for Disease Control and Prevention (CDC), the World Health Organization (WHO), 
and the World Organization for Animal Health (OIE) confirm that there is no evidence that the 
2009 H1N1 virus is transmitted by food and that humans cannot get the illness from eating 
properly handled pork or pork products. Four global organizations—WHO, OIE, the World Trade 
Organization (WTO) and the United Nations Food and Agriculture Organization (FAO)—also 
issued a joint statement that “pork products handled in accordance with hygienic practices are not 
a source of infection.” Also, in the United States, the CDC and the U.S. Department of 
Agriculture (USDA) report that there is no evidence at this time that pigs in the United States are 
infected with this virus strain.  
Administration officials and many in Congress are strongly urging U.S. trading partners to base 
any food safety measures on scientific evidence and to act in accordance with their international 
obligations under the World Trade Organization (WTO), OIE guidelines, and WTO member 
obligations under the Sanitary and Phytosanitary (SPS) Agreement. OIE, among other 
international organizations, has stated that there currently is no justification for imposing trade 
measures against the importation of pork and pork products. As some countries are continuing to 
pursue trade restrictions on North American pork products, some affected exporting countries are 
considering formal trade actions in the WTO.  
U.S. pork producers hope these efforts to avoid further negative effects on U.S. pork and other 
agricultural markets are successful. The National Pork Producers Council (NPPC) has asked 
USDA to provide financial assistance for U.S. pork producers to address the general economic 
downturn in U.S. hog markets, including assistance to address issues regarding the H1N1 virus. 
Members of Congress from districts with important meat sectors are likely to pay close attention 
to developments during 2009. 
 
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Potential Farm Sector Effects of 2009 H1N1 “Swine Flu”: Questions and Answers  
 
Contents 
General Overview ....................................................................................................................... 1 
What Is Swine Flu? ............................................................................................................... 1 
What Is 2009 Influenza A(H1N1)? ........................................................................................ 1 
Why Is This New H1N1 Flu Virus Sometimes Called “Swine Flu”? ...................................... 1 
Food Safety and Human Health Concerns ................................................................................... 1 
Can Humans Get 2009 H1N1 Flu from Eating Pork and Pork Products?................................ 1 
Can Humans Get 2009 H1N1 Through Contact with Pigs or with Uncooked Pork? ............... 2 
Do Any Pigs Have the Virus That Has Infected Humans? ...................................................... 3 
U.S. Pork Market Effects ............................................................................................................ 4 
How Have U.S. Consumers Reacted to Reports of the Outbreak? .......................................... 4 
How Have U.S. Trading Partners Reacted to Reports of the Outbreak? .................................. 5 
How Important Are Export Markets to the U.S. Pork Sector?................................................. 7 
What Share of U.S. Pork Exports Is Represented by Countries Restricting Trade? ................. 7 
What Are the International Obligations of Our Trading Partners? .......................................... 8 
What International Actions Are Being Taken? ....................................................................... 9 
Other U.S. Farm Sector Effects ................................................................................................. 10 
How Have Other U.S. Agricultural Markets Been Affected by the Outbreak? ...................... 10 
What Are the Estimated Aggregate Market Costs to the U.S. Agriculture Sector? ................ 11 
What Type of Assistance Is the U.S. Pork Industry Seeking? ............................................... 12 
 
Tables 
Table 1. U.S. Pork Product Exports, by Type ............................................................................... 7 
Table 2. U.S. Pork Product Exports, by Country .......................................................................... 8 
 
Contacts 
Author Contact Information ...................................................................................................... 13 
 
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Potential Farm Sector Effects of 2009 H1N1 “Swine Flu”: Questions and Answers  
 
General Overview1 
What Is Swine Flu? 
Swine flu refers to strains of influenza (“flu”) that occur naturally and may cause outbreaks of 
respiratory illness among wild and domestic pigs. People do not normally get swine flu, but each 
year the Centers for Disease Control and Prevention (CDC) identifies a few isolated cases of 
human flu that are caused by flu strains typically associated with swine. 
What Is 2009 Influenza A(H1N1)? 
The current outbreak of concern is caused by a new strain of flu virus that produces illness in 
people. It is one of several flu virus strains designated as influenza A(H1N1) for specific proteins 
on their surface. This new virus was first detected in people in the United States in April 2009. 
Mexico, Canada, and other countries around the world have reported human cases of illness from 
the new flu strain. The virus appears to spread from person to person in much the same way as 
with seasonal flu. 
Why Is This New H1N1 Flu Virus Sometimes Called “Swine Flu”? 
This virus was originally referred to as “swine flu” because laboratory testing showed that many 
of its genes were similar to flu viruses that normally occur in pigs in North America. Further 
study has shown that this new virus is very different from what normally circulates in North 
American pigs. It has two genes from flu viruses that normally circulate in pigs in Europe and 
Asia, as well as genes from flu strains that normally circulate in humans and in birds. At this time, 
there is no evidence that pigs were involved in the transmission of the new flu virus to humans. 
For more background information, see CRS Report R40554, The 2009 Influenza Pandemic: 
An Overview, by Sarah A. Lister and C. Stephen Redhead. General information is also available 
at the CDC and WHO websites.2 
Food Safety and Human Health Concerns 
Can Humans Get 2009 H1N1 Flu from Eating Pork and Pork 
Products? 
The CDC, the WHO, and the World Organization for Animal Health (OIE)3 confirm that there is 
no evidence that 2009 H1N1 virus is transmitted by food.4 These organizations have repeatedly 
                                                
1 This section is adapted from information provided by CDC on the website “H1N1 Flu (Swine Flu),” 
http://www.cdc.gov/h1n1flu/. 
2 CDC: http://www.cdc.gov/swineflu/general_info.htm; WHO: http://www.who.int/csr/disease/swineflu/en/. 
3 OIE is the intergovernmental organization responsible for improving animal health worldwide, and is recognized as a 
reference organization by the WTO. The organization is still known by its former French abbreviation, OIE (Office 
International des Épizooties), though it was renamed the World Organization for Animal Health. 
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Potential Farm Sector Effects of 2009 H1N1 “Swine Flu”: Questions and Answers  
 
emphasized that humans cannot get 2009 H1N1 flu, or any other type of flu, from eating pork or 
pork products. Some have further emphasized the importance of eating properly handled and 
cooked pork and pork products, and recommend cooking pork to an internal temperature of 
160°F/70°C. This corresponds to the general guidance for the preparation of pork and other meat 
to kill all viruses and other foodborne pathogens.  
The U.S. Department of Agriculture (USDA) has repeatedly said that the 2009 H1N1 flu is not a 
foodborne disease and that eating properly handled and cooked pork or pork products is safe.5 
These same arguments were made by medical and veterinary authorities at congressional 
hearings.6 The American Veterinary Medical Association (AVMA) further claims that “neither 
exposure to pigs nor consumption of pork are risk factors for infection.”7 
Four intergovernmental organizations—WHO, OIE, the World Trade Organization (WTO), and 
the United Nations Food and Agriculture Organization (FAO)—issued a joint statement that 
“pork products handled in accordance with hygienic practices are not a source of infection.”8 The 
European Centre for Disease Prevention and Control (ECDC) also states that “influenza virus is 
not transmitted by eating properly handled and cooked pork and pork products,” and the 
European Food Safety Authority (EFSA) claims it is “not aware of any scientific evidence of risk 
to pork consumers from influenza viruses regardless of the type of pork consumed.”9  
Given the safety of eating pork and pork products, along with the fact that the disease is primarily 
transmitted from human to human, several U.S. and international organizations argued that the 
disease should not be called “swine flu.” The CDC, WHO, and OIE, among others, now 
recommend instead referring to the disease by its scientific name, influenza A(H1N1) or 2009 
H1N1. 
Can Humans Get 2009 H1N1 Through Contact with Pigs or with 
Uncooked Pork?  
The WHO and CDC continue to emphasize that humans typically contact this type of flu through 
human-to-human contact, or through contact with infected pigs or environments contaminated 
with the virus. However, there is no current evidence of humans acquiring infection directly from 
live pigs. OIE further notes that pork and pork products, “handled in accordance with good 
                                                             
(...continued) 
4 CDC: http://www.cdc.gov/swineflu/general_info.htm; WHO: http://www.who.int/csr/disease/swineflu/en/; and OIE: 
http://www.oie.int/eng/press/en_press2009.htm?e1d3.  
5 USDA, “Questions and Answers,” Release No. 0131.09; and USDA, “Update By Secretary of Agriculture Vilsack 
Regarding USDA Outreach Efforts Regarding H1N1 Flu,” April 27, 2009, Release No. 0132.09. 
6 See testimony, for example, from a Senate Labor, Health and Human Services, Education, and Related Agencies 
Appropriations Subcommittee hearing, April 28, 2009. 
7 AVMA, “AVMA advises consumers that pork and pork products are safe for consumption,” April 29, 2009, 
http://www.avma.org/press/releases/090429_pork_products_safe.asp. 
8 WTO, “Joint FAO, WHO, OIE, WTO Statement on A/H1N1 Virus,” May 2, 2009, http://www.wto.org/english/
news_e/news09_e/jt_stat_02may09_e.htm. 
9 ECDC, “Frequently asked questions on influenza virus A(H1N1),” May 3, 2009, http://www.ecdc.europa.eu/en/files/
pdf/Health_topics/090503_FAQs_Influenza%20AH1N1.pdf; and EFSA, “New influenza A (H1N1),” May 3, 2009, 
http://www.efsa.europa.eu/EFSA/efsa_locale-1178620753812_1211902500487.htm. 
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Potential Farm Sector Effects of 2009 H1N1 “Swine Flu”: Questions and Answers  
 
hygienic practices recommended by the WHO, the Codex Alimentarius Commission,10 and the 
OIE, will not be a source of infection”; and it recommends that “authorities and consumers should 
ensure that meat from sick pigs or pigs found dead are not processed or used for human 
consumption under any circumstances.”11  
EFSA has further stated that it is “not aware of any scientific evidence of risk to pork consumers 
from influenza viruses regardless of the type of pork consumed,” including raw meat, although it 
is quick to cite longstanding food safety advice that proper cooking kills bacteria or viruses which 
may be found in foods, and may prevent possible risk of foodborne illness.12 USDA is also 
reminding consumers to practice good food hygiene and “safe food handling and preparation 
techniques for all meat and poultry.”13 
Do Any Pigs Have the Virus That Has Infected Humans?  
In the United States, USDA and other veterinary experts confirm that, as of this date, there has 
been no evidence that U.S. swine are infected with the 2009 H1N1 virus; the 2009 H1N1 virus 
has also not been reported in feral pigs in the United States.14 USDA and a network of federal 
veterinarians, state animal health officials, and private practitioners are regularly monitoring U.S. 
swine for signs of significant disease.15  
The H1N1 flu virus was found in a swine herd in Alberta, Canada. This incident was reported to 
the OIE and was confirmed to have resulted from human-to-pig transmission.16 The Canadian 
Food Inspection Agency (CFIA) said it has taken all necessary precautions and has placed the 
herd under quarantine. CFIA maintains that Canadian pork continues to be safe to eat.17 
The U.S. Animal Health & Productivity Surveillance Inventory (“Inventory”)18 maintained by 
USDA’s Animal and Plant Health Inspection Service (APHIS) does surveillance for avian flu,19 
but currently does not do surveillance for swine flu because of information limitations:20  
                                                
10 Codex is the international food safety organization that develops food standards, guidelines and codes of practice 
under the Joint FAO/WHO Food Standards Programme. 
11 OIE, “Joint FAO/WHO/OIE Statement on influenza A(H1N1) and the safety of pork,” reissued May 7, 2009, 
http://www.oie.int/eng/press/en_090507_bis.htm.  
12 EFSA, “New influenza A (H1N1),” May 3, 2009, http://www.efsa.europa.eu/EFSA/efsa_locale-
1178620753812_1211902500487.htm. 
13 USDA, “Questions and Answers,” Release No. 0131.09. 
14 AVMA, “Frequently Asked Questions About 2009 H1N1 Flu Virus,” May 4, 2009, http://www.avma.org/
public_health/influenza/new_virus/new_flu_virus_faq.asp.  
15 USDA, “Questions and Answers,” Release No. 0131.09. 
16 OIE, “Immediate Notification Report,” May 2, 2009, http://www.oie.int/wahis/reports/
en_imm_0000008065_20090505_191855.pdf. 
17 CFIA, “An Alberta Swine Herd Investigated for H1N1 Flu Virus,” May 2, 2009, http://www.inspection.gc.ca/
english/corpaffr/newcom/2009/20090502e.shtml. 
18 USDA, APHIS, Animal Health Monitoring & Surveillance, http://www.aphis.usda.gov/vs/nahss/inventory.htm. 
19 Ibid. Surveillance and monitoring activities related to avian influenza. 
20 USDA, APHIS, U.S. Animal Health and Productivity Surveillance Inventory, http://nsu.aphis.usda.gov/inventory/
background.faces. 
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Potential Farm Sector Effects of 2009 H1N1 “Swine Flu”: Questions and Answers  
 
Currently, the Inventory includes all animal health surveillance programs conducted by 
Veterinary Services, as well as all animal health monitoring studies completed by the National 
Animal Health Monitoring System (NAHMS). Information on certain additional animal health 
surveillance programs or studies conducted by USDA and other Federal agencies is also currently 
included.  
Industry reports indicate that APHIS is working on draft guidelines and surveillance plans for the 
H1N1 virus. Other industry reports based on information prior to the outbreak also indicate that 
the CDC National Center for Immunization and Respiratory Diseases (NCIRD) Influenza 
Division (ID) and USDA APHIS Veterinary Services (VS, specifically the National Veterinary 
Services Laboratories or NVSL) entered into an interagency agreement regarding swine influenza 
virus (SIV) surveillance in July 2008.21 These same reports suggest that a parallel agreement was 
reached between CDC and USDA Agricultural Research Service (ARS) for related research 
efforts on isolates derived from the APHIS program.  
The CDC continues to study the origins of H1N1 and in May 2009 released information 
indicating that the virus likely originated in pigs, but that more genetic study and surveillance is 
needed.22  
There were initial reports that the 2009 H1N1 flu had possibly originated at a business unit of 
Smithfield Foods Inc. located in Veracruz, Mexico.23 Smithfield has repeatedly reported that there 
is no evidence of the presence of 2009 H1N1 influenza in any of the company’s swine herds or in 
its employees at any of its worldwide operations, including those in the United States.24  
U.S. Pork Market Effects  
How Have U.S. Consumers Reacted to Reports of the Outbreak?  
In late April, amid early reports of the spread of 2009 H1N1 flu, retail outlets reported that 
consumers were leery of buying pork because of fears that the disease may be linked to pork 
consumption. Tyson Foods Inc. also reported a drop in domestic pork sales.25 As domestic sales 
fell, retail and wholesale hog prices fell sharply, along with hog and pork-belly futures prices on 
the Chicago Mercantile Exchange.26 This drop in prices coincided with seasonal fluctuations in 
the hog market that would normally have caused prices to be higher. Economists at Purdue 
                                                
21 John A. Korslund and Ellen Kasari, “National Swine Influenza Surveillance,” as reported by Thepigsite.com, 
http://www.thepigsite.com/articles/1/pig-health/2770/national-swine-influenza-surveillance (originally reported in 
North Carolina State Extension’s Swine News, May 2009). 
22 L. Schnirring, “Genetic study: Novel H1N1 likely originated in pigs,” May 22, 2009, Center for Infectious Disease 
Research & Policy (CIDRAP) Academic Health Center, University of Minnesota, http://www.cidrap.umn.edu/cidrap/ 
content/influenza/swineflu/news/may2209genetics.html. 
23 See, for example, S. Fainaru, “Mexicans blame industrial hog farms,” Washington Post, May 10, 2009; and R. 
Roberson, “Smithfield says it’s not the source of H1N1,” Southeast Farm Press, May 8, 2009. 
24 See, for example, Smithfield Foods Inc., “Smithfield foods reaffirms no incidence of A(H1N1) in any of its herds or 
employees,” May 3, 2009, http://investors.smithfieldfoods.com/releasedetail.cfm?ReleaseID=381309.  
25 “Tyson Foods saw dip in pork sales as flu spread,” Reuters, May 4, 2009.  
26 See, for example, B. Baskin, “Oil Slips Below $50 a Barrel on Swine-Flu Worries,” Wall Street Journal, April 29, 
2009; W. McFerron, “Hog Futures Fall as Swine Flu Reduces Pork Trade; Cattle Rise,” Bloomberg.com, April 28, 
2009; and W. Cheng, “China, Indonesia Ban Pork From Mexico, U.S. on Flu,” Bloomberg.com, April 27, 2009. 
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Potential Farm Sector Effects of 2009 H1N1 “Swine Flu”: Questions and Answers  
 
University estimate that Indiana hog producers were losing about $5 a head on April 24, 
compared to estimated losses of about $20 immediately following reports of the initial outbreak 
in March.27 Stock analysts also reportedly downgraded the stock of Tyson Foods Inc. and 
Smithfield Foods Inc. and lowered annual earnings estimates for these companies.28 
In late April, consumers were still confused by how humans can get the 2009 H1N1 flu. For 
example, a phone survey conducted by the Harvard School of Public Health on April 29 asked 
1,067 consumers about the ways humans can get the 2009 H1N1 flu. Among listed choices, 
respondents were asked about whether each was a possible way of contracting the disease. Most 
(83% of respondents) said: “From being in close contact with someone who has swine flu—that 
is, within about three feet.” However, others responded that humans can get the 2009 H1N1 flu 
“From being near someone who has swine flu, but not in close contact—that is, being at thirty 
feet away” (29% of respondents) and “From coming in contact with pigs” (34%). Others 
indicated that they thought humans can get the 2009 H1N1 virus “From eating pork” (13%).29 
Once the safety of consuming pork products was widely recognized, consumers in the United 
States returned to buying them—particularly as pork prices began to drop. 
How Have U.S. Trading Partners Reacted to Reports of the 
Outbreak?  
Citing public health and safety concerns, several countries have initiated or implemented steps to 
ban or restrict U.S. pork or pork products. Reports differ among governmental, industry, and other 
media sources regarding which importing countries are instituting restrictions and which 
imported product lines will be targeted. Following the initial reports of the outbreak, the U.S. 
Meat Export Federation (USMEF) and other media reports confirmed that several countries, 
among them China (but not Hong Kong) and Russia, had instituted official full or partial trade 
restrictions on U.S. pork products (see box).30 By the following week, some countries had 
announced that they would lift their import ban; however, other countries announced that they too 
would ban all pork imports.31 Many of these countries have also imposed these same restrictions 
on Mexican and Canadian pork and pork products. South Korea had instituted a partial ban 
(which was subsequently lifted), suspending imports only of live swine, but not pork products. 
Various conflicting media reports listed some countries as restricting pork imports, although 
many of these countries did not impose such trade restrictions.32 
                                                
27 C. Everson, “Hog farmers brace for financial pain of swine flu,” Associated Press, May 6, 2009. 
28 J. Wilson and T. C. Dreibus, “Corn, Soybeans, Wheat Drop as Swine Flu May Cut Animal-Feed Use,” 
Bloomberg.com, April 27, 2009. 
29 Harvard School of Public Health, “Swine Flu (H1N1 Virus) Survey,” Harvard Opinion Research Program, April 29, 
2009, http://www.hsph.harvard.edu/news/press-releases/files/Swine_Flu.TOPLINE.pdf. Survey was funded under a 
cooperative agreement with the CDC, and based on a total of 1,067 interviews. See responses to survey question 9. 
30 As reported by various news media and information cited and/or reported from USTR, USDA, and the U.S. Meat 
Export Federation (USMEF). 
31 T. Johnston, “Some countries are over H1N1 scare, some aren't,” Meatingplace Online, May 11, 2009.  
32 See, e.g,, Reuters wire, “Countries slap bans on pork after flu outbreak,” April 30, 2009; and T. Johnston, “More 
trading partners prohibit U.S. pork on swine flu fears,” Meatingplace Online, April 27, 2009.  
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Potential Farm Sector Effects of 2009 H1N1 “Swine Flu”: Questions and Answers  
 
Importing Countries with Official Full or Partial Bans on U.S. Pork Imports 
(as of early September, 2009) 
 
Armenia: Al  pork imports have been banned, effective May 8, 2009. 
Azerbaijan: USTR indicates official import restrictions on U.S. pork and pork products are in effect. 
Bahrain: USTR indicates official import restrictions on U.S. pork and pork products are in effect. 
China: Trade suspension is limited to uncooked pork and pork products, and applies to most U.S. states with 
confirmed H1N1 cases. Fresh/frozen and heat-treated pork and pork products are ineligible if derived from swine 
raised or slaughtered in most U.S. states. Pork and pork products also may not transit these restricted states even if 
the truck, container, or railcar is sealed. Hong Kong is not included in any portion of China’s suspension. 
Ecuador: Restricted U.S. imports, effective April 28, but not currently on USTR list of countries restricting trade. 
Honduras: Restricted U.S. imports, effective April 24, but not currently on USTR list of countries restricting trade. 
Indonesia: Effective April 27, suspended imports of all pork and swine from outside its borders. 
Jordan: USTR indicates official import restrictions on U.S. pork and pork products are in effect. 
Kazakhstan: Effective April 28, suspended pork imports from Texas, California, and Kansas, but is expected to 
extend this ban to other affected states as well. 
Kyrgystan: USTR indicates official import restrictions on U.S. pork and pork products are in effect. 
Macedonia: USTR indicates official import restrictions on U.S. pork and pork products are in effect. 
Russia: Starting on April 21, suspended fresh/frozen poultry meat, pork, and beef from animals raised or slaughtered 
in most U.S. states, as well as from certain slaughtering facilities (such as a suspension of imports from Smithfield 
Packing Company’s Virginia slaughter plant, effective as of July 2009). Trade suspension is limited to uncooked pork 
and pork products. Heat-treated (not less than 80° Celsius for not less than 30 minutes) meat and poultry products 
are al owed. Products from some states may continue to transit through any of the restricted states. 
Saint Lucia: Effective April 27, suspended import of fresh and frozen pork, live pigs, and swine semen. 
Serbia: U.S. pork and pork products are already listed as ineligible for export to Serbia due to a lack of certification 
requirements. 
Thailand: Effective April 27, suspension covers all U.S. states, and includes all uncooked pork products including 
meat (fresh, chilled, and frozen), offal, live animals, semen, embryos, and hides and skins. Processed pork products 
such as canned foods or food in sealed containers are still eligible.  
Ukraine: Effective date April 21, suspended imports of pork, live pigs, and pork products from al  states. Other 
products of animal origin can be imported under existing regulations if these are accompanied by valid health 
certificates. 
Uzbekistan: USTR indicates official import restrictions on U.S. pork and pork products are in effect. 
United Arab Emirates: Restricted U.S. imports, effective April 27, but not currently on USTR list of countries. 
Countries that have lifted trade suspensions:  
•  South Korea had instituted a partial ban in April, suspending imports only of live swine from North America, 
but had not suspended imports of pork or pork products (although it has instituted increased screening and 
inspection of pork from the United States). Media report indicate that this partial ban was lifted in August 2009. 
•  Others:  Some countries, such as Croatia and Malaysia, have lifted their earlier import bans.  
Sources: USTR, “H1N1 and Trade,” June 2, 2009, USMEF, “USMEF Export Issues—Influenza Update,” May 4, 2009; 
various articles by Meatingplace Online; and USMEF press releases and communication. 
 
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Restrictions vary by country. For example, Russia has announced it will restrict all livestock and 
meat products, including beef, pork, and poultry, from selected states, and restrict all pork from 
several other selected states; China is restricting pork and live pigs from most, but not all, U.S. 
states. Some countries are banning all pork products, whereas other countries are restricting 
certain products only. The United States is among the largest supplier of pork products to both 
China and Russia.33 
How Important Are Export Markets to the U.S. Pork Sector?  
Foreign sales are a critical source of income for the U.S. meat and poultry industries, with the 
United States now exporting more than one-fourth of its annual pork production.34 Fresh, chilled, 
and frozen pork products account for the bulk of U.S. annual pork exports (Table 1). China and 
Russia are among the top 10 largest international markets for U.S. pork, and represented 15% 
percent of total U.S. pork exports in 2008 (Table 2).  
What Share of U.S. Pork Exports Is Represented by Countries 
Restricting Trade? 
Countries that have instituted full or partial bans, as of mid-May, on U.S. pork exports as a result 
of the 2009 H1N1 flu outbreak represent 13%-16% of U.S. annual pork trade, based on trade data 
for the past three years from 2006 through 2008 (Table 1). The bulk of this lost potential is the 
result of restricted trade from Russia and China. The other countries that are restricting U.S. pork 
imports comprise a small overall share of annual U.S. pork trade. Japan, the largest U.S. market 
for U.S. pork, with more than one-third of the market in 2008, has repeatedly indicated that it will 
not restrict U.S. pork exports; also, Hong Kong, despite mainland China’s trade restrictions, has 
indicated that it will not restrict trade.35  
Table 1. U.S. Pork Product Exports, by Type 
(annual and three-year average, 2006-2008, and percentage share; $ millions) 
Avg. 
% Share  
% Share 
HTS Category 
2006 
2007 
2008 
2006-2008 
2008 
2006-2008 
Live pigs 
25 
19 
28 
24 
1% 
1% 
Fresh, chilled, frozen pork 2,222 
2,488 
3,789 2,833 84%  86% 
Processed pork products 
131 
152 
204 
162 
5% 
5% 
Offal and other products 
186 
211 
481 
293 
11% 
9% 
   Total 
2,564 
2,870 
4,503 
3,312 
100% 
100% 
Source: Compiled by CRS using data from the U.S. International Trade Commission, http://dataweb.usitc.gov.  
Notes: By U.S. Harmonized Tariff Schedule (HTS), includes live pigs (HTS 0103), fresh, chilled, and frozen pork 
(HTS 0203), processed pork products (HTS 1602.40), and offal and other pork products (HTS 0206.40, 0502). 
Imports for consumption (U.S. dollars). Nominal U.S. dollars. 
                                                
33 Global Trade Atlas data, 2006-2008. 
34 CattleFax Update, August 29, 2008. 
35 USMEF, “USMEF Export Issues—Influenza Update,” May 4, 2009. 
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Table 2. U.S. Pork Product Exports, by Country 
(annual and three-year average, 2006-2008, and percentage share; $ millions) 
Average 
% Share  
% Share 
Country 
2006 2007 2008 
2006-2008 
2008 
2006-2008 
Japan 
1,034 1,144 1,529 1,236  34%  37% 
Mexico 
 
429 363 574 455 13% 14% 
Canada 
388 452 516 452 11% 14% 
Russia 
145 182 402 243  9%  7% 
Hong Kong 
42 
82 
350 
158 
8% 
5% 
Korea 
227 224 275 242  6%  7% 
Chinaa 
47 138 271 152  6%  5% 
Australia 
52 71 95 73 2% 2% 
Philippines 
10 17 49 25 1% 1% 
Al  
Other 
190 196 440 275 10%  8% 
Total 
2,564 2,870 4,503 3,312 100% 100% 
Potential Lossb 
208 342 738 429 16% 13% 
Source: Compiled by CRS using data from the U.S. International Trade Commission, http://dataweb.usitc.gov. 
Notes: By U.S. Harmonized Tariff Schedule (HTS), includes live pigs (HTS 0103), fresh, chilled and frozen pork 
(HTS 0203), processed pork products (HTS 1602.40), and offal and other pork products (HTS 0206.40, 0502). 
Imports for consumption (U.S. dollars). Nominal U.S. dollars. 
a.  China does not include Hong Kong.  
b.  “Potential Loss” based on reported U.S. exports from countries with import bans (see box).  
What Are the International Obligations of Our Trading Partners?  
Under WTO rules, health and safety measures applied to imports must be supported by scientific 
evidence. Administration officials and many in Congress are strongly urging all U.S. trading 
partners to base any food safety measures on scientific evidence and to act in accordance with 
their international obligations under the WTO, OIE guidelines, and WTO member obligations 
under the Sanitary and Phytosanitary (SPS) Agreement.36  
Regarding 2009 H1N1, OEI—the global animal health standards organization—asserts that “the 
imposition of ban measures related to the import of pigs and pig products do [sic] not comply 
with international standards published by the OIE and all other competent standard setting 
international bodies for animal health and food safety.”37 Accordingly, it is argued, there currently 
is no justification for imposing trade measures against the import of pork and pork products based 
on 2009 H1N1.  
                                                
36 SPS measures refer to any of the laws, rules, standards, and procedures that governments employ to protect humans, 
other animals, and plants from diseases, pests, toxins, and other contaminants. See also CRS Report RL33472, Sanitary 
and Phytosanitary (SPS) Concerns in Agricultural Trade, by Geoffrey S. Becker. 
37 OIE, “OIE reaction to trade restrictions imposed following transmission of virus ‘A/H1N1’ from human to pigs,” 
May 7, 2009, http://www.oie.int/eng/press/en_090507.htm. 
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Potential Farm Sector Effects of 2009 H1N1 “Swine Flu”: Questions and Answers  
 
What International Actions Are Being Taken?  
As some countries continue to pursue trade restrictions on North American pork products, some 
affected exporting countries are considering formal trade actions within the WTO. The U.S. Trade 
Representative (USTR) is urging all U.S. trading partners to base any food safety measures on 
scientific evidence in accordance with their international obligations, and to remove trade 
restrictions. In a statement, USTR said that “restrictions on U.S. pork or pork products or any 
meat products from the United States resulting from the recent outbreak do not appear to be based 
on scientific evidence and may result in serious trade disruptions without cause”; USDA also has 
emphasized that “the science is clear that consuming or handling pork, consistent with safe 
handling practices, is of no risk to consumers.”38 Many in Congress also are urging U.S. trading 
partners to base these decisions on science, and therefore not to ban imports of U.S. pork.39 
At a June 2009 meeting of the WTO’s Committee on Sanitary and Phytosanitary Measures, which 
deals with trade-related aspects of food safety and animal and plant health, several exporting 
countries—Australia, Canada, the Dominican Republic, Mexico, Japan, and the United States—
criticized WTO member countries that had imposed “unjustified” import bans on pork and pork 
products. Some countries with import restrictions—Ukraine, Indonesia, China, Jordan—claim 
these measures are temporary and either had been lifted or would be lifted once the “scientific 
evidence had been examined.” China said it had to “act urgently” because of its “large vulnerable 
population, the burden on its public health system, the importance of pigs and pork, and the fact 
that the H1N1 virus shares some genetic make-up with influenza that affects pigs.”40 
On May 5, Mexico issued a statement asking its trading partners to “withdraw any restrictive 
measure imposed on Mexican products that is not consistent with the scientific information 
available and with their international obligation.”41 This was followed by other formal statements 
against import restrictions on pork products due to influenza H1N1 maintained by Armenia, 
Bahrain, China, Croatia, Gabon, Indonesia, Jordan, Thailand, and Ukraine.42 Other reports 
indicate that Canada would consider bringing a WTO challenge to China’s ban on imports of 
Canadian pork.43 The European Union Standing Committee on the Food Chain and Animal 
Health also asserts that, based on the available evidence, trade restrictions are not justified.44  
Many regard the trade bans and restrictions as politically motivated or intended to protect pork 
producers in their own countries. Russia, for example, is not competitive on the global market in 
                                                
38 USTR, “USTR and USDA Caution Trading Partners to Base Food Safety Measures on Science During Human 
Swine Influenza Outbreak,” April 28, 2009; USTR, “H1N1 and Trade,” June 2, 2009, http://www.ustr.gov/trade-topics/
agriculture/h1n1-and-trade. 
39 See, for example, press releases from Senator Harkin, “Harkin Statement on the Safety of U.S. Pork,” April 28, 2009, 
and “Harkin Calls on U.S. Trade Representative, Secretary of Agriculture, Secretary of State to Push for Lift of Bans 
on U.S. Pork,” June 11, 2009; and public comments from Senator Grassley, “Transcription of Senator Grassley’s 
Agriculture News Conference Call,” July 21, 2009. 
40See http://www.wto.org/english/news_e/news09_e/sps_25jun09_e.htm; and International Centre for Trade and 
Sustainable Development (ICTSD), “Pork Exporters Condemn ‘Swine Flu’ Import Bans,” July 1, 2009. 
41 WTO, Committee on Sanitary and Phytosanitary Measures, “Information On Outbreaks of A/H1N1 Human 
Influenza Virus On Mexican Territory,” Communication from Mexico, G/SPS/GEN/921, May 5, 2009. 
42 Ibid; see also WTO notifications G/SPS/N/CHN/116, G/SPS/N/JOR/20, G/SPS/N/UKR/2. 
43 “Mexico, Canada Condemn Bans on Pork Exports,” Bridges Weekly, May 6, 2009. 
44 EC, “Statement of the Standing Committee on the Food Chain and Animal Health,” May 5, 2009, http://ec.europa.eu/
health/ph_threats/com/Influenza/docs/scfcah_statements.pdf. 
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Potential Farm Sector Effects of 2009 H1N1 “Swine Flu”: Questions and Answers  
 
red meats and poultry, and its domestic production has not kept pace with consumption as 
incomes rise, even though government policies have attempted to encourage domestic production. 
In recent years, imports have accounted for a growing share of Russian pork consumption, and 
reached more than 50% of supplies in 2008.45 Russia periodically has imposed SPS measures that 
have impeded U.S. meat and poultry imports in recent years. In March 2002, Russia announced a 
ban on U.S. poultry imports over the possible presence of avian influenza in the United States. 
U.S. officials countered that the ban was not scientifically defensible and was discriminatory.46 
China is among the world’s largest pork markets and producers, and imports account for a 
negligible share of overall supplies. However, imports have grown in recent years and are 
important to exporting nations such as the United States, given the sheer size of China’s market. 
The National Pork Producers Council (NPPC) has said it expects current restrictions on U.S. pork 
exports because of concerns about the H1N1 virus to be temporary, particularly as international 
authorities continue to emphasize that the virus is transmitted through human contact and not 
through pork consumption.47 However, many producers are concerned that these initial trade 
restrictions will be difficult to remove, once fully instituted. For example, EU’s livestock beef 
production has not returned to the level it maintained prior to the outbreak of bovine spongiform 
encephalopathy (BSE), commonly known as “mad cow disease.” BSE also affected U.S. beef 
producers in 2003 when the first U.S. case was announced.48 Russia was among the many 
countries to ban U.S. beef, although it not had been a major purchaser of such products. 
Other U.S. Farm Sector Effects  
How Have Other U.S. Agricultural Markets Been Affected by the 
Outbreak?  
Initially, as domestic pork sales fell in response to the spread of the H1N1 flu, futures prices for 
corn, soybeans, and wheat declined sharply.49 This was a result of concerns that lower pork 
demand and production could reduce demand for other commodities, including U.S. feed grains 
and protein meals (like soybeans), as well as other farm inputs. There were also fears that reduced 
demand for pork would have adverse ripple effects throughout the hog sector, resulting in 
production changes as producers respond to lower prices.50 Analysts predicted that feed prices 
will likely continue to be volatile, but difficult to anticipate.51 For example, grains prices have 
moved higher since their initial drop following early reports of the outbreak.52 In other livestock 
markets, wholesale beef and cattle futures prices were initially higher following reports of the 
                                                
45 USDA, “Pork Summary Selected Countries,” Production, Supply and Distribution Online. 
46 See CRS Report RS22948, U.S.-Russia Meat and Poultry Trade Issues, by Geoffrey S. Becker. 
47 NPPC, NPPC Expects Export Restrictions to be Temporary,” PigSite.com, May 1, 2009. 
48 G. Blumenthal, “Influenza Trade Enforcement Needed,” World Perspectives, Inc. Daily Wire April 29, 2009. 
49 University of Illinois Extension, “Crop markets react to swine flu,” Weekly Outlook, April 27, 2009; and W. Cheng, 
“China, Indonesia Ban Pork From Mexico, U.S. on Flu,” Bloomberg.com, April 27, 2009. 
50 For example, hog producers may choose to curtail planned farrowing and/or decrease their demand for weaned 
feeder pigs, or choose to liquidate/reduce herd sizes, if lower prices result in low/negative meat-to-feed profit margins. 
51 D. Good, “Crop Markets React To Swine Flu,” Weekly Outlook, University of Illinois, April 27, 2009. 
52 “Grains rally after initial market reaction to “swine” flu,” Brownfield Network, May 4, 2009. 
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Potential Farm Sector Effects of 2009 H1N1 “Swine Flu”: Questions and Answers  
 
outbreak.53 The U.S. produce sector also expressed concerns about possible restrictions on fresh 
produce trade with Mexico and the processing of agricultural guest labor workers from Mexico 
because of the 2009 H1N1 outbreak, but these fears so far have not materialized.54  
What Are the Estimated Aggregate Market Costs to the U.S. 
Agriculture Sector?  
Initial reports of the aggregate economic effects of H1N1 on the farming sector—especially on 
U.S. hog producers—were grim. However, as time has passed and the general economic 
downturn in the U.S. hog industry has deepened, it has become difficult to separate out the 
economic effects of H1N1 from generally unfavorable market conditions in the U.S. hog sector.  
Early estimates by analysts at the University of Missouri have estimated that the U.S. pork 
industry could see losses of up to $400 million in the next few months, given lower market 
prices.55 In its May 2009 outlook report, USDA revised its second-quarter hog prices downward 
to reflect lower prices in April due to the negative effects of H1N1 flu virus.56 In June 2009, 
USTR reported updated estimates by the University of Missouri, indicating that the U.S. pork 
industry could face losses of about $270 million in income in the second quarter of 2009 alone, 
based on market conditions in the first few days since the virus was identified.57 More recent 
estimates, however, indicate that the economic effect of the H1N1 virus has not been as negative 
as some analysts had predicted.58 
Pork producers in the United States began to see a downturn in U.S. pork markets back in late 
2007. Following years of favorable returns in 2004-2006, the domestic industry began to expand 
and eventually pushed up slaughter rates to record levels in 2008. At the same time, pork prices 
started to decline while feed costs and other production input costs were rising. Starting in 2008, 
the worldwide economic downturn resulted in a decrease in meat demand.59 The H1N1 outbreak 
compounded this already worsening situation, and newly imposed trade restrictions in U.S. export 
markets, particularly in Russia and China, only further strained demand for U.S. pork products. 
At the same time, despite industry efforts to downsize and reduce sow numbers, increased herd 
productivity and efficiency gains—given higher litter rates and also higher slaughter weights 
owing to favorable weather this summer—have kept overall production volumes stable and put 
downward pressure on prices.60 In part because of the current surplus situation, in May 2008 and 
                                                
53 W. Cheng, “China, Indonesia Ban Pork From Mexico, U.S. on Flu,” Bloomberg.com, April 27, 2009. 
54 T. Karst, “Swine flu raises concern about trade, H2-A program, The Packer, May 1, 2009; and subsequent postings 
on The Packer website (http://www.thepacker.com/) 
55 J. Perkins, “Hog industry to take huge hit from Influenza A,” Brownfield Network, May 1, 2009. 
56 USDA, World Agricultural Supply and Demand Estimates, May 12, 2009; and USDA Economic Research Service, 
“Livestock, Dairy, and Poultry Outlook,” LDP-M-181, July 17, 2009.  
57 USTR, “H1N1 and Trade,” June 2, 2009, http://www.ustr.gov/trade-topics/agriculture/h1n1-and-trade. 
58 For example, see USMEF, “Pork, Beef Exports Weathering Influenza, Economic Crisis Fairly Well,” July 13, 2009. 
59 For market information on the U.S. hog market prior to H1N1, see Ron Plain, “2009 Hog Market Outlook,” 
University of Missouri, February 2009, http://web.missouri.edu/~plainr/PowerPoints/PowerPointindex.html. Other 
University of Missouri reports are at http://web.missouri.edu/~plainr/. Also see M. J. Crumb, “Feed costs, swine flu put 
small hog farms in peril,” Associated Press, June 19, 2009. 
60 “Hog Cutbacks Seem Slow,” Cattle Buyers Weekly, August 24, 2009; USDA Economic Research Service, 
“Livestock, Dairy, and Poultry Outlook,” LDP-M-181, July 17, 2009; and CRS communication with Ron Plain, 
University of Missouri, September 3, 2009. 
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Potential Farm Sector Effects of 2009 H1N1 “Swine Flu”: Questions and Answers  
 
March 2009, USDA announced that it would purchase $50 million and $25 million, respectively, 
in pork products for federal food and nutrition assistance programs.61  
Following the H1N1 outbreak, USDA predicted that prices would recover and did not alter its 
outlook for hog prices during the second half of 2009, based on expectations that market 
disruptions from trade restrictions and consumer concerns would be short-lived.62 In mid-June, 
Smithfield Foods Company reported that, although it remains concerned about restrictions on 
international markets, the company believes that H1N1 had “only a short-term effect on U.S. 
fresh pork demand,” with “no significant effect on the quarter” based on the company’s 
consolidated income statement.63 In August, representatives for Smithfield reiterated that 
quarterly returns would be favorable despite existing hog market conditions that are expected to 
persist until may 2010.64 Still, for May 2009, USDA reported that pork exports were 36% below 
pork exports for May 2008.65 Exports in June 2009 were down 31% compared to June 2008.66 In 
July, USDA predicted pork prices would remain low through 2009.67 
Overall, analysts predict that 2009 H1N1 will have less of an impact on the pork industry than 
BSE had on the beef industry in 2003 or avian influenza on the poultry industry in 2005-2006.68 
Analysts with World Perspectives, Inc., note that although pork prices have declined, supplies are 
also lower than last year, and it remains unclear whether pork sales have actually decreased.69 In 
other markets, analysts at the University of Illinois highlight that “grains have had quite a rally in 
prices, after the market’s initial ‘knee-jerk’ reaction,” although pork prices continue to be lower.70 
Among meat packers, analysts predict that the trade restrictions will have less of an effect on 
larger diversified companies, such as Cargill Inc. and JBS S.A., but could affect single-product 
firms such as National Beef Packing Company and companies already operating under financial 
distress, such as Pilgrims Pride.71 
What Type of Assistance Is the U.S. Pork Industry Seeking? 
The ongoing economic crisis in the U.S. hog sector, coupled with potentially negative effects of 
the H1N1 virus, remains a concern to that sector.  
                                                
61 USDA, “Agriculture Secretary Vilsack Announces Support for Domestic Nutrition Programs, Ranchers and Farmers 
Assistance to Benefit Turkey, Pork, Lamb and Walnut Industries,” Release No. 0079.09, March 31, 2009; and USDA 
news release dated May 1, 2008.  
62 USDA, World Agricultural Supply and Demand Estimates, May 12, 2009; and USDA Economic Research Service, 
“Livestock, Dairy, and Poultry Outlook,” LDP-M-179, May 19, 2009.  
63 Smithfield Foods Company, “Smithfield Foods Reports Fourth Quarter and Full Year Results,” June 16, 2009, 
http://www.smithfieldfoods.com/media/news.aspx.  
64 L. M. Keefe, “Smithfield’s Pope has good, bad news for 2010,” Meatingplace Online, August 27, 2009.  
65 USDA Economic Research Service, “Livestock, Dairy, and Poultry Outlook,” LDP-M-181, July 17, 2009.  
66 USMEF, “Slump Continues for Beef, Pork Exports,” August 13, 2009. USMEF reports that the export total in June 
2008 was the second-highest single-month total in the history of U.S. pork sales. 
67 USDA Economic Research Service, “Livestock, Dairy, and Poultry Outlook,” LDP-M-181, July 17, 2009.  
68 Keefe, L.M., “Pork recovery to take ‘weeks,’: Purdue economist,” Meatingplace Online, May 1, 2009. 
69 Blumenthal, G., “Pork for Pork, Beef Deal,” World Perspectives, Inc. Daily Wire, May 6, 2009. 
70 “Grains rally after initial market reaction to “swine” flu,” Brownfield Network, May 4, 2009. 
71 Johnston, T., “H1N1 hurting protein companies’ cash flow and credit profiles,” Meatingplace Online, June 16, 2009. 
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Potential Farm Sector Effects of 2009 H1N1 “Swine Flu”: Questions and Answers  
 
In May 2009, NPPC sent a letter to USDA to request assistance for the U.S. pork industry to 
compensate for losses it says it has incurred since the 2009 H1N1 outbreak. Specifically, NPPC 
asked USDA to implement a purchase program for $50 million of pork products to help boost 
cash hog prices; to work with U.S. trading partners to remove all restrictions on exports of U.S. 
pork and pork products; to develop a comprehensive surveillance program for early detection of 
swine diseases; and to work to keep open the border between the United States and Canada to 
allow for movement of hogs.72  
Again, in August, NPPC asked USDA for up to $250 million in support for USDA pork purchases 
and for other assistance.73 Also in August, another group of producer organizations, including the 
Producers Livestock Marketing Association, the National Farmers Organization, and the Allied 
Producers Cooperative, asked USDA to consider a $200 million federally funded sow buy-out 
program to reduce pork supplies.74 
In September 2009, USDA announced it would purchase another $30 million in pork products. 
Altogether, USDA claims it has purchased “approximately $151 million in pork products for food 
and nutrition assistance programs this year.”75 
 
Author Contact Information 
 
Renée Johnson 
   
Specialist in Agricultural Policy 
rjohnson@crs.loc.gov, 7-9588 
 
 
 
 
                                                
72 NPPC, “NPPC Asks USDA to Help U.S. Pork Producers,” May 1, 2009, http://www.nppc.org/News/
DocumentPrint.aspx?DocumentID=24693. 
73 NPPC, “NPPC Asks USDA to Save Pork Industry,” August 17, 2009, http://www.nppc.org/News/
PressRelease.aspx?DocumentID=25252. 
74 “Pork groups urge for sow buy-out program,” PigProgress.net, August 21, 2009, http://www.pigprogress.net/news/
pork-groups-urge-for-sow-buy-out-program-id3316.html. The proposal would take as many as 500,000 sows out of 
production. 
75 USDA, “Agriculture Secretary Vilsack Announces Support for Domestic Nutrition Programs and Pork Producers,” 
Release No. 0420.09, September 3, 2009, http://www.usda.gov. The purchases reflect both emergency surplus 
removals and entitlement program purchases for domestic food programs. 
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