Avian influenza


Color enhanced transmission electron micrograph of the virus responsible for avian influenza. Avian influenza affects the respiratory, digestive and/or nervous system of many species of birds. Avian influenza virus infection can occur in most, if not all, species of birds, both domestic and wild. Influenza viruses vary widely in their ability to cause disease (pathogenicity) and their ability to spread among birds. Wild species of birds usually do not develop clinical diseases, but some influenza viruses cause severe illness or death in chickens, turkeys and guinea fowl. In Hong Kong in 1997, virus sterotype H5N1 was found to infect humans and birds simultaneously. It killed 2 people. In response, the Hong Kong government destroyed all poultry to eradicate potential virus carriers and prevented a more serious outbreak. TEM at 40.000x.

Credit: Eye of Science / Science Source

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File Size: up to 11.9" by 12.0" (at 300dpi)

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