title: Update: influenza activity--United States, October 2-November 26, 2011.
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: D000328:Adult; D000956:Antigens, Viral / Q000032:analysis; D000998:Antiviral Agents / Q000494:pharmacology; D002648:Child; D024882:Drug Resistance, Viral; D006801:Humans; D053118:Influenza A Virus, H1N1 Subtype / Q000276:immunology / Q000302:isolation & purification*; D053122:Influenza A Virus, H3N2 Subtype / Q000276:immunology / Q000302:isolation & purification*; D009981:Influenza B virus / Q000276:immunology / Q000302:isolation & purification*; D007251:Influenza, Human / Q000453:epidemiology*; D008297:Male; D010045:Outpatients; D011014:Pneumonia / Q000209:etiology / Q000401:mortality; D011159:Population Surveillance; D014481:United States / Q000453:epidemiology
chemical_list: D000956:Antigens, Viral; D000998:Antiviral Agents