What Diseases Does H1n1 Flu Cause?

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Definition

The H1N1 virus (swine flu) is a new flu virus strain that has caused a worldwide pandemic in humans from June 2009 to August 2010.

The Centers for Disease Control and Prevention now call the virus 2009 H1N1.


Alternative Names

Swine flu


Causes, incidence, and risk factors

Earlier forms of the H1N1 virus were found in pigs. Over time, the virus changed (mutated) and can now infect humans. Because H1N1 is a new virus in humans, your immune system cannot fight the virus very well. As a result,...

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