Influenza virus

Influenza virus is the virus among the family. orthomyxovirus. A characteristic spherical shape. But sometimes they may find that the virus is also uncertain shape. Genetic material of viruses is R. CNA type single line. (single-stranded RNA) molecules that retain the number 8 all the necessary genetic information for the next generation of viruses.

Influenza virus subdivided a group is 3.
Influenza virus A.
Influenza virus B.
Influenza virus C.

Groups A and B viruses are the cause of human influenza C virus is the cause of the disease found in less than very well. And rarely cause serious illness.

In addition to cause disease in human influenza virus A and can cause disease in birds, pigs and ducks have the whale influenza virus C can cause disease in pigs. And dogs again.

Influenza virus A sub-classification into the sub-species (strain) is another feature of the serology of proteins on the outer surface of the two virus types. hemagglutinin (HA) with neuraminidase (NA).

Biological functions. virus hemagglutinin is a protein that cells use to adhere to the island target. As the initial step of infection of neuraminidase. A viral protein models created to destroy the children infected cells to rupture. The new virus released from cells.

Currently issued by the HA properties from serology is divided into 16 types and has 9 types of NA.

Therefore, Mexico, 2009 A H1N1 influenza means that the Influenza virus A hemagglutinin subtype 1, and neuraminidase subtype 1, which harbor outbreak in 2009.