Flu vs H1N1
The word flu is the shortened form of influenza. Influenza virus causes the flu. There are three main types of virus; Influenza virus A (can infects human and birds), Influenza virus B (infects only human) and Influenza virus C (can infect Human, dogs and pigs). These viruses are called RNA viruses, that means they have the genetic matter in the RNA. There are sub types in each virus. they are called serotypes. However the Influenza A virus got popularity as the sub groups of this virus caused more dangerous infection and caused deaths. Swine flu (Influenza A, H1N1 sub type) is one of the flu infection that spread widely in 2009. Its was a pandemic influenza.
- H1N1, which caused Spanish Flu in 1918, and Swine Flu in 2009
- H2N2, which caused Asian Flu in 1957
- H3N2, which caused Hong Kong Flu in 1968
- H5N1, which caused Bird Flu in 2004
- H7N7, which has unusual zoonotic potential
- H1N2, endemic in humans, pigs and birds
Finally, the flu is a common seasonal viral infection and H1N1 is the type of flu which may cause death.