Abstract
During October 2-November 26, 2011, influenza activity remained low in the United States. Thus far, influenza A viruses have predominated, and the majority are antigenically related to the 2011-12 influenza vaccine strains for the Northern Hemisphere. This report summarizes U.S. influenza activity since October 2 and updates the previous summary.
MeSH terms
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Adult
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Antigens, Viral / analysis
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Antiviral Agents / pharmacology
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Child
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Drug Resistance, Viral
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Humans
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Influenza A Virus, H1N1 Subtype / immunology
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Influenza A Virus, H1N1 Subtype / isolation & purification*
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Influenza A Virus, H3N2 Subtype / immunology
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Influenza A Virus, H3N2 Subtype / isolation & purification*
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Influenza B virus / immunology
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Influenza B virus / isolation & purification*
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Influenza, Human / epidemiology*
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Male
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Outpatients
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Pneumonia / etiology
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Pneumonia / mortality
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Population Surveillance*
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United States / epidemiology
Substances
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Antigens, Viral
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Antiviral Agents