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Avian influenza virus

Colourised electron transmission micrograph of avian influenza.

A colourised electron transmission micrograph of avian influenza A H5N1 virus, commonly known as ‘bird flu’. Avian influenza A viruses do not usually infect humans; however, several instances of human infections and outbreaks have been reported since 1997.

Rights: Public domain – US Government
Published: 9 November 2008Size: 9.49 MB