2009 swine flu pandemic

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2009 flu pandemic
  50 000+ confirmed cases
  5,000+ confirmed cases
  500+ confirmed cases
  50+ confirmed cases
  5+ confirmed cases
  1+ confirmed cases
Virus strainPandemic H1N1/09 virus
First outbreakVeracruz, Mexico; North America
Index caseEarly 2009
Arrival dateJanuary 2009- August 10, 2010
150,000–575,000 (Estaimated 284,000 deaths)

The 2009 flu pandemic or swine flu was an influenza pandemic that lasted from early 2009 to late 2010, and the second of the two pandemics involving H1N1 influenza virus (first was the 1918–1920 Spanish flu pandemic and the second one was the 1977 Russian Flu).

First described in April 2009, turned out to be a new strain of H1N1 which resulted when a previous triple reassortment of bird, swine and human flu viruses.[1]

About 11–21% of the global population (About 6.8 billion), or around 700 million–1.4 billion people (Suspect cases) had affect the flu — more than Spanish flu pandemic.[2][3]

However, with about 150,000–575,000 fatalities, it had a much lower case fatality rate of 0.01-0.08%.[4]

References[change | change source]

  1. Trifonov, Vladimir; Khiabanian, Hossein; Rabadan, Raul (9 July 2009). "Geographic Dependence, Surveillance, and Origins of the 2009 Influenza A (H1N1) Virus". New England Journal of Medicine. 361 (2): 115–19. doi:10.1056/NEJMp0904572. PMID 19474418. S2CID 205105276.
  2. Kelly, Heath; Peck, Heidi A.; Laurie, Karen L.; Wu, Peng; Nishiura, Hiroshi; Cowling, Benjamin J. (2011-08-05). "The Age-Specific Cumulative Incidence of Infection with Pandemic Influenza H1N1 2009 Was Similar in Various Countries Prior to Vaccination". PLOS ONE. 6 (8): e21828. Bibcode:2011PLoSO...621828K. doi:10.1371/journal.pone.0021828. ISSN 1932-6203. PMC 3151238. PMID 21850217.
  3. Roos, Robert (8 August 2011). "Study puts global 2009 H1N1 infection rate at 11% to 21%". Center for Infectious Disease Research and Policy.
  4. "First Global Estimates of 2009 H1N1 Pandemic Mortality Released by CDC-Led Collaboration | CDC". www.cdc.gov. 25 June 2012. Retrieved 31 January 2020.