| birnaviridae | A family of bisegmented, double-stranded RNA viruses causing infection in fish, mollusks, fowl, and drosophila. There are three genera: aquabirnavirus, avibirnavirus, and entomobirnavirus. Horizontal and vertical transmission occurs for all viruses. (12 Dec 1998) |
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| birnaviridae infections | Virus diseases caused by the birnaviridae. (12 Dec 1998) |