Richard Gunderman does not work for, consult, own shares in or receive funding from any company or organisation that would benefit from this article, and has disclosed no relevant affiliations beyond their academic appointment. Republish our articles for free, online or in print, under Creative Commons licence. This year marks the th anniversary of the great influenza pandemic of Half a billion people were infected. Some have called it the greatest pandemic in history.
Deadly Bird Flu In China Evolves, Spreads To New Regions
Deadly Bird Flu In China Evolves, Spreads To New Regions : Goats and Soda : NPR
Back to top. Current recommendations for interpandemic and pandemic alert periods include:. Recommendations for testing of clinical specimens from patients suspected to have H5N1 influenza include CDC Update :. Situations in which avian influenza virus subtypes have been recognized to be transmitted to humans and cause disease are identified in the following table. Case-patients were linked to an outbreak of H5N1 in poultry. Sustained person-to-person transmission did not occur, and the outbreak stopped when all birds in the Hong Kong commercial poultry industry about 1. Both case-patients had been hospitalized with influenza-like illness and both recovered uneventfully Peiris , Uyeki
Hilleman in 1958
Registration is free and allows users complete access to all sections of the site, including archived news items. The "Asian Flu" was a category 2 flu pandemic outbreak of influenzavirus A that originated in China in early lasting until Some authors believe it originated from mutation in wild ducks combining with a pre-existing human strain.
New influenza strains of influenza virus arise continually as a result of two mechanisms that alter the genetic code in the viral RNA. These mechansims are referred to as genetic drift and genetic shift. Genetic Drifts— Small changes in genetic material called point-mutations. The antigenic proteins of influenza may be subject to the small mutations and not recognized by antibodies Hunt, Explain this more.