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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).
Instead, this study will focus on evolutionary processes that are directly involved in the emergence of pdmH1N1 precursors in Mexican swine, including reassortment and viral migration driven by long-distance movements of live swine. Figure 2. Genetic diversity of IAVs in Mexican swine, 2010–2014.
Cases were diagnosed in-late April in several regions of the state, showing that when the first cases had been identified in Mexico and California, the infection was already widespread in Louisiana. The most affected age group was between the ages of five and 25. INTRODUCTION.
Dr. José Ángel Córdova Villalobos, Mexico's Secretariat of Health, stated that since March 2009, there have been over 1,995 suspected cases and 149 deaths, with 20 confirmed to be linked to a new swine influenza strain of Influenza A virus subtype H1N1.
11 Μαΐ 2009 · The first quick and dirty analysis of Mexico's swine flu outbreak suggests that the H1N1 virus is about as dangerous as the virus behind a 1957 pandemic that killed 2 million people worldwide. But it's not nearly as lethal as the bug that caused the 1918 Spanish flu pandemic.
The U.S. Cen-ters for Disease Control and Prevention (CDC) and the Public Health Agency of Canada confirmed that the novel virus was an H1N1 strain of swine flu origin on 23 April. Since then, says Alpuche, Mexico has been “working very hard” to overcome its limita-tions in diagnostics and surveillance.
