Influenza A

From Wikipedia
Virus classification
Group: Group V ((-)ssRNA)
Family: Orthomyxoviridae


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,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:

Influenzavirus A cause of all flu pandemics and infect humans, other mammals and birds
Influenzavirus B infect humans and seals
Influenzavirus C infect humans and pigs


Flu pandemics:

Name
Asiatic(Russian)Flu Year 1889-1890 Death 1 millon possibly type H2N2
Spanish Flu Year 1918-1920 Death 40 mil type H1N1
Asian Flu Year 1957-1958 Death 1-1.5 mil type H2N2
Hong Kong Flu Year 1968-1969 Death 0.75 mil type H3N2
Swine Flu Year 2009-... Death ? type H1N1