As mentioned in a previous post on the 12/06/09 WHO is worried about a 2nd wave of Swine Flu. It looks as though it is actually starting to happen
Brazilian scientists have identified a new strain of the H1N1 virus after examining samples from a patient in Sao Paulo, their institute said Tuesday.
The variant has been called A/Sao Paulo/1454/H1N1.
The mutation comprised of alterations in the Hemagglutinin protein which allows the virus to infect new hosts, it said.
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Also
Japan has confirmed its first case of a genetic mutation of the new H1N1 flu virus that shows resistance to Tamiflu, the main antiviral flu drug, a health ministry official said on Thursday.