Images of the newly identified H1N1 influenza virus
Images of the newly identified H1N1 influenza virus taken in the CDC Influenza Laboratory. This preliminary negative stained transmission electron micrograph (TEM) shows some of the ultrastructural morphology of the A/CA/4/09 swine flu virus. Swine Influenza (swine flu) is a respiratory disease of pigs caused by type A influenza virus that regularly causes outbreaks of influenza in pigs. Swine flu viruses cause high levels of illness and low death rates in pigs. Swine influenza viruses may circulate among swine throughout the year, but most outbreaks occur during the late fall and winter months similar to outbreaks in humans. The classical swine flu virus (an influenza type A H1N1 virus) was first isolated from a pig in 1930.
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Photo credit: © Scott Camazine / Alamy / Afripics
License: Licensed
Model Released: No
Keywords: /ca/4/09, cdc, flu, h1n1, influenza, laboratory, swine, tem, virus
