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This kind of Influenza started in California, US for first time in a human
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Second human infection with the new influenza A H1N1 virus detected in California about 130 miles away from first infection, with no known connection to previous patient.
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CDC activated it’s Emergency Operations Center (EOC).
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Two additional human infections with 2009 H1N1 were detected in Texas, transforming the investigation into a multistate outbreak and response.
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the Director-General of the World Health Organization (WHO)
announced a Public Health Emergency of International Concern. The emergence
and rapid spread of a novel influenza virus, influenza A (H1N1), posed a pandemic
threat. -
WHO Director-General raised the level of influenza pandemic alert from phase 3 to phase 4, based on data showing person-to-person spread and the ability of the virus to cause community-level outbreaks.
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Peak school dismissal day in the spring phase of the pandemic. 980 schools were dismissed, affecting 607,778 students.
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CDC distributed updated recommendations for the use of influenza antiviral medicines to provide guidance for clinicians in prescribing antiviral medicines for treatment and prevention (chemoprophylaxis) of 2009 H1N1 influenza.
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CDC issued an MMWR updating the 2009 H1N1 influenza situations in Mexico, the United States, and worldwide.
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The WHO rappidly states that the pandemic was going fast
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CDC reported findings in an MMWR that indicated a large prevalence of obesity in intensive care patients with confirmed 2009 H1N1 influenza infection.
After mid-July, 2009 H1N1 influenza activity declined in most countries. -
Clinical trials testing the 2009 H1N1 flu vaccine began.
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Second wave of 2009 H1N1 influenza activity began in the U.S.
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More than 1,000 test kits shipped to 120 domestic and 250 international laboratories in 140 countries since May 1, 2009.
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FDA announced its approval of a fifth 2009 H1N1 vaccine.
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First 100 million doses of 2009 H1N1 vaccine were available for ordering.
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FDA’s VRBPAC selected 2009 H1N1 virus for inclusion in 2010-2011 seasonal flu vaccine
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The virus has spread fast, infecting 214 countries and causing 18, 449 deaths
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The WHO anunced that in the world this virus has been control