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H1N1 Pandemic Risk
Is there a pandemic risk? People who are not in close contact with pigs generally
have no immunity to the swine influenza viruses - they are less likely to be able to prevent a virus
infection.
If the virus infects enough people in a given area, the risk of an
influenza pandemic is significantly greater. Experts say it is very hard to
predict what impact a flu pandemic caused by a swine influenza virus would have on the global human
population. This would depend on how virulent the virus is, what existing immunity among humans there already
is, plus several other factors.
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