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In March and April 2009, an outbreak of a new strain of influenza commonly referred to as "swine flu" infected many people in Mexico and other parts of the world, causing illness ranging from mild to severe.
In 2009, U.S. agricultural officials speculated, although emphasizing that there was no way to prove their hypothesis, that "contrary to the popular assumption that the new swine flu pandemic arose on factory farms in Mexico, [the virus] most likely emerged in pigs in Asia, but then traveled to North America in a human."
30 Απρ 2009 · Outbreak of Swine-Origin Influenza A (H1N1) Virus Infection --- Mexico, March--April 2009 In March and early April 2009, Mexico experienced outbreaks of respiratory illness and increased reports of patients with influenza-like illness (ILI) in several areas of the country.
Random newspaper reports of occasional flu deaths over past weeks had morphed into a new, unknown strain of swine flu called H1N1, confirmed through tests of Mexican samples conducted in Canada.
3 Απρ 2014 · The first laboratory-confirmed cases of H1N1 influenza appeared in Mexico in February and March of 2009. Cases that were detected in California in late March were laboratory-confirmed by...
South Korea warned against travel to Mexico City and three Mexican states. [275] The government stepped up quarantine and safety checks on travelers arriving from the United States and Mexico, and pork imports from those countries.
12 Ιαν 2010 · The arrival of the new year has inspired a number of newspapers, magazines, and journals to look back at 2009’s experience with the ongoing swine flu pandemic. Their recent assessments and others can help answer four central questions about H1N1 and the U.S. response.
