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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.
The 2009 swine flu pandemic, caused by the H1N1/swine flu/influenza virus and declared by the World Health Organization (WHO) from June 2009 to August 2010, was the third recent flu pandemic involving the H1N1 virus (the first being the 1918–1920 Spanish flu pandemic and the second being the 1977 Russian flu ).
The 2009 H1N1 influenza virus (formerly known as swine flu) first appeared in Mexico and the United States in March and April 2009 and has swept the globe with unprecedented speed as a result of airline travel.
28 kwi 2009 · Several travel companies cancelled flights and vacation packages to Mexico Tuesday, citing the growing outbreak of swine flu in that country. Among the cancellations: Transat AT postponed all...
28 kwi 2009 · WestJet and Air Canada are cancelling flights to Mexico due to increased concern over the spread of the human swine-flu virus. Calgary-based WestJet and WestJet Vacations will stop service...
27 kwi 2009 · Though the United States has not issued any travel warnings related to the swine flu outbreak in Mexico, major U.S. airlines are waiving fees for passengers who want to change their tickets...
Swine influenza virus (SIV) or swine-origin influenza virus (S-OIV) refers to any strain of the influenza family of viruses that is endemic in pigs. As of 2009, identified SIV strains include influenza C and the subtypes of influenza A known as H1N1 , H1N2 , H2N1, H3N1 , H3N2 , and H2N3 .
