The H1N1 virus is a subtype of the influenzavirus A which is the flu virus most frequently found in humans. Surprisingly some strains of the H1N1 virus are actually
endemic in humans and responsible for a very small part of all flu-like illnesses but are the major cause of the seasonal flu. In 2006 almost 50% of all human influenza
infections were from H1N1 strains.
In general, Influenza A virus strains can be categorized based on two different proteins both found at the surface of the virus. These two proteins are hemagglutinin (H)
and neuraminidase (N) which is thus where the "H" and "N" come from. While all influenza A viruses have this "H" and "N" the structure can vary due to genetic mutation
causing different strains of the virus.
While swine influenza virus is very common among pigs all over the world it is not common for the virus to be transmitted from pigs to humans. If the swine flu is transmitted
from a pig to a human it is called zoonotic swine flu. Anyone who works with pigs on a regular basis does have an increased chance of getting the swine flu. There is no way to
get H1N1 from pork as long as it is properly cooked.
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On September 22nd the CDC released an update on its recommendations for using antiviral medications for treating influenza. The use of these medications is only for people
who have a more severe form of the illness or those who might encounter complications. The following people are considered to have a greater risk of complications and thus
should consult their doctor immediately if they think they have the flu:
Pregnant Women
Anyone over 65 years old
People with existing medical conditions (particularly respiratory conditions)
Children younger than two years old
People younger than 19 who are taking-part in aspirin therapy
Always consult your doctor if you have any questions - do not take any medication without first consulting your doctor.
H1N1 Virus
