Update: Influenza Activity - United States

• Published in: MMWR. Morbidity and mortality weekly report 2015-12, Vol.64 (48), p.1342-1348
• Main Authors: Smith, Sophie, Blanton, Lenee, Kniss, Krista, Mustaquim, Desiree, Steffens, Craig, Reed, Carrie, Bramley, Anna, Flannery, Brendan, Fry, Alicia M, Grohskopf, Lisa A, Bresee, Joseph, Wallis, Teresa, Garten, Rebecca, Xu, Xiyan, Elal, Anwar Isa Abd, Gubareva, Larisa, Barnes, John, Wentworth, David E, Burns, Erin, Katz, Jacqueline, Jernigan, Daniel, Brammer, Lynnette
• Format: Article
• Language: English
• Subjects: Adolescent; Adult; Aged; Ambulatory Care - statistics & numerical data; Antiviral Agents - pharmacology; Child; Child Mortality; Child, Preschool; Drug Resistance, Viral; Humans; Infant; Infant, Newborn; Influenza A Virus, H1N1 Subtype - drug effects; Influenza A Virus, H1N1 Subtype - isolation & purification; Influenza A Virus, H3N2 Subtype - drug effects; Influenza A Virus, H3N2 Subtype - isolation & purification; Influenza B virus - drug effects; Influenza B virus - isolation & purification; Influenza, Human - complications; Influenza, Human - epidemiology; Influenza, Human - mortality; Influenza, Human - virology; Middle Aged; Pneumonia - complications; Pneumonia - mortality; Population Surveillance; Seasons; United States - epidemiology; Young Adult
• ISSN: 1545-861X
• DOI: 10.15585/mmwr.mm6448a4

CDC collects, compiles, and analyzes data on influenza activity year-round in the United States. The influenza season generally begins in the fall and continues through the winter and spring months; however, the timing and severity of circulating influenza viruses can vary by geographic location and season. Influenza activity in the United States remained low through October and November in 2015. Influenza A viruses have been most frequently identified, with influenza A (H3) viruses predominating. This report summarizes U.S. influenza activity for the period October 4-November 28, 2015.