Sunday, May 24, 2009

Influenza A H1N1

Influenza A virus subtype H1N1, also known as A(H1N1), is a subtype of influenzavirus A and the most common cause of influenza (flu) in humans. Some strains of H1N1 are endemic in humans.Influenza A virus strains are categorized according to two proteins found on the surface of the virus: hemagglutinin (H) and neuraminidase (N). All influenza A viruses contain hemagglutinin and neuraminidase, but the structure of these proteins differs from strain to strain due to rapid genetic mutation in the viral genome.

Influenza A virus strains are assigned an H number and an N number based on which forms of these two proteins the strain contains. There are 16 H and 9 N subtypes known in birds, but only H 1, 2 and 3, and N 1 and 2 are commonly found in humans.
As far as I know, there are 144 different combinations that a flu can mutate into. China,Hong Kong,South Korea and Malaysia.

Many countries are doing the screening at the airport,all schools are doing the temperature taking,many shopping centers are providing hand sanitisers to clean their hands. I don't think that it is effective as the symtoms take 7 days to take shape so by the time it has already sperad to many people.

Singapore advised public to take precautionary measures such as avoiding crowded areas and maintaining high standards of personal hygiene at all times. However, if you are unwell with fever and cough but have no travel history to affected areas, please see a doctor and stay at home.

I will follow the government's advice to maintain high standards of personal hygiene and see a doctor if I've a cough or fever.

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