Pandemic Influenza

The virus was identified as Influenza, subtype H1N1, a new variant of the grippe suna. It contains typical ADN of virus aviaries, swines and human beings, including elements of the viruses European and Asian swines. Therefore, this illness also was known as Suna Grippe. The main subtypes of this virus are H1N1, H1N2, H3N2 and H3N1. The Health department (2010) clarifies that: The viruses influenza are composites of RNA of only helix, the family of the Ortomixovrus, and subdivide themselves in three types, B and C, in accordance with its antigenic diversity. The viruses can suffer mutations, that is, they can pass for transformations in its structure. The types and the B, compared with type C, have greater to be able to cause illness (morbidade) and death (mortality).

The epidemics and pandemics, generally, are associates to the virus influenza. (BRAZIL, 2010, P. 2) In other words, the Influenza viruses are subdivided in the types, B and C, in accordance with its proper antigenic profiles. Another detail if to observe is that even so the Influenza virus the H1N1 presents high virulence and low mortality in swines, in the human beings presents different behavior. Sheep et alii comments: Typically, the antigenic properties of the viruses vary It to type to each year, what it causes an incapacity of the organism host keeping a lasting resistance. (SHEEP ET ALII, 2010, P. 208) For being highly transmissible and changeable, the viruses of can come It to the Influenza to cause surtos, epidemics and same pandemics, being able to provide to high morbidade and mortality between the human beings.

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