Related topics: influenza · swine flu · flu · influenza virus · virus

Protecting poultry from bird flu

With winter approaching, birds are migrating south to escape the cold and take advantage of more abundant food sources.

RNA recovered from extinct animal in world first

Scientists have for the first time recovered RNA from an extinct species, the Tasmanian tiger, raising hope for the resurrection of animals once thought lost forever, Stockholm University researchers told AFP.

Bird flu kills scores of sea lions in Argentina

Scores of sea lions have died from bird flu in Argentina, officials said Tuesday, as an unprecedented global outbreak continues to infect mammals, raising fears it could spread more easily among humans.

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Orthomyxoviridae

Influenzavirus A Influenzavirus B Influenzavirus C Isavirus Thogotovirus

The Orthomyxoviridae (orthos, Greek for "straight"; myxa, Greek for "mucus") are a family of RNA viruses that includes five genera: Influenzavirus A, Influenzavirus B, Influenzavirus C, Isavirus and Thogotovirus. The first three genera contain viruses that cause influenza in vertebrates, including birds (see also avian influenza), humans, and other mammals. Isaviruses infect salmon; thogotoviruses infect vertebrates and invertebrates, such as mosquitoes and sea lice.

The three genera of Influenzavirus, which are identified by antigenic differences in their nucleoprotein and matrix protein infect vertebrates as follows:

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