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Direct transmission of a swine flu virus from pigs to humans is possible (zoonotic swine flu). [12] Fifty cases are known to have occurred since the first report in medical literature in 1958, which have resulted in a total of six deaths. [ 13 ]
At the present moment, we are at phase 3 on the scale, meaning a new influenza virus subtype is causing disease in humans, but is not yet spreading efficiently and sustainably among humans. [29] So far, H5N1 infections in humans are attributed to bird-to-human transmission of the virus in most cases.
Avian influenza virus H3N2 is endemic in pigs ("swine flu") in China and has been detected in pigs in Vietnam, increasing fears of the emergence of new variant strains. Health experts say pigs can carry human influenza viruses, which can combine (i.e. exchange homologous genome sub-units by genetic reassortment ) with H5N1 , passing genes and ...
CHICAGO (Reuters) -H5N1 bird flu was confirmed in a pig on a backyard farm in Oregon, the first detection of the virus in swine in the country, the U.S. Department of Agriculture said on Wednesday.
Pigs are mixing bowls for bird flu and human flu viruses, increasing the risk of mutations that help H5N1 spread to humans. It's still not inevitable.
Swine influenza virus is common throughout pig populations worldwide. Transmission of the virus from pigs to humans is not common and does not always lead to human influenza, often resulting only in the production of antibodies in the blood. If transmission does cause human influenza, it is called zoonotic swine flu or a variant virus. People ...
The U.S. Department of Agriculture said this week that cow-to-cow transmission is a factor in the spread of bird flu in dairy herds, but it still does not know exactly how the virus is being moved ...
Influenza epidemics in modern times have the tendency to start in the eastern or southern hemisphere, [68] with Asia being a key reservoir. [13] Influenza A virus and influenza B virus co-circulate, so have the same patterns of transmission. [1] The seasonality of influenza C virus, however, is poorly understood.