title: Update: influenza activity - United States, September 29, 2013-February 8, 2014.
abstract: Influenza activity in the United States began to increase in mid-November and remained elevated through February 8, 2014. During that time, influenza A (H1N1)pdm09 (pH1N1) viruses predominated overall, while few B and A (H3N2) viruses were detected. This report summarizes U.S. influenza activity* during September 29, 2013-February 8, 2014, and updates the previous summary.
authors.forename: Carmen S
authors.initials: CS
authors.lastname: Arriola
authors.forename: Lynnette
authors.initials: L
authors.lastname: Brammer
authors.forename: Scott
authors.initials: S
authors.lastname: Epperson
authors.forename: Lenee
authors.initials: L
authors.lastname: Blanton
authors.forename: Krista
authors.initials: K
authors.lastname: Kniss
authors.forename: Desiree
authors.initials: D
authors.lastname: Mustaquim
authors.forename: Craig
authors.initials: C
authors.lastname: Steffens
authors.forename: Rosaline
authors.initials: R
authors.lastname: Dhara
authors.forename: Michelle
authors.initials: M
authors.lastname: Leon
authors.forename: Alejandro
authors.initials: A
authors.lastname: Perez
authors.forename: Sandra S
authors.initials: SS
authors.lastname: Chaves
authors.forename: Jackie
authors.initials: J
authors.lastname: Katz
authors.forename: Teresa
authors.initials: T
authors.lastname: Wallis
authors.forename: Julie
authors.initials: J
authors.lastname: Villanueva
authors.forename: Xiyan
authors.initials: X
authors.lastname: Xu
authors.forename: Anwar Isa
authors.initials: AI
authors.lastname: Abd Elal
authors.forename: Larisa
authors.initials: L
authors.lastname: Gubareva
authors.forename: Nancy
authors.initials: N
authors.lastname: Cox
authors.forename: Lyn
authors.initials: L
authors.lastname: Finelli
authors.forename: Joseph
authors.initials: J
authors.lastname: Bresee
authors.forename: Michael
authors.initials: M
authors.lastname: Jhung
mesh_terms: D000293:Adolescent; D000328:Adult; D017677:Age Distribution; D000368:Aged; D002648:Child; D002675:Child, Preschool; D024882:Drug Resistance, Viral; D005260:Female; D006760:Hospitalization / Q000706:statistics & numerical data; D006801:Humans; D007223:Infant; D053118:Influenza A Virus, H1N1 Subtype / Q000187:drug effects / Q000302:isolation & purification*; D053122:Influenza A Virus, H3N2 Subtype / Q000187:drug effects / Q000302:isolation & purification*; D009981:Influenza B virus / Q000187:drug effects / Q000302:isolation & purification*; D007251:Influenza, Human / Q000453:epidemiology* / Q000401:mortality; D008297:Male; D008875:Middle Aged; D010045:Outpatients; D011159:Population Surveillance; D011247:Pregnancy; D014481:United States / Q000453:epidemiology; D055815:Young Adult