Update on the continuous spread and expansion of H5N1 highly pathogenic avian influenza
H5N1 highly pathogenic avian influenza (HPAI) virus, initially detected in 1996 in China, spread to more than 60 countries or territories on three continents within a ten-year period and has become endemic in poultry in several countries and regions (including Ganges–Brahmaputra Delta, Indonesia, Viet Nam, China and Egypt). The virus infects wild birds and domestic poultry and causes sporadic transmissions to humans raising concerns of a potential pandemic. The recent confirmation of human cases of low pathogenic avian influenza A (H7N9) and bird positive findings across multiple provinces in China since April 2013 in live bird markets highlights the threat posed by existing and newly emerging avian influenza viruses irrespective of their virulence. The economic impact of disease caused by avian influenza viruses is related to losses incurred as a result of high mortality in poultry, to costs associated with control measures including poultry movement restrictions, to disruption of tra de and threats to food security of resource poor countries.
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| Format: | Book (series) biblioteca |
| Language: | English |
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2014
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| Online Access: | https://openknowledge.fao.org/handle/20.500.14283/I3610E http://www.fao.org/3/a-i3610e.pdf |
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