BUENOS AIRES (AFP) — The swine flu deaths of two people in Argentina and a mutation of the H1N1 virus detected in Brazil have added to fears that South America is entering a harsh winter beset by the flu pandemic.
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But there were underlying fears that the virus currently spreading around the world through human-to-human contact might mutate further, possibly into a more deadly form, as happened with the 1918 Spanish flu which killed tens of millions.
Those fears heightened a little Tuesday, when a Brazil's Adolfo Lutz Bacteriological Institute said its researchers had identified and isolated a new strain of the A(H1N1) virus in a Sao Paulo patient.
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