Abstract
The United States 2017-18 influenza season (October 1, 2017-May 19, 2018) was a high severity season with high levels of outpatient clinic and emergency department visits for influenza-like illness (ILI), high influenza-related hospitalization rates, and elevated and geographically widespread influenza activity across the country for an extended period. Nationally, ILI activity began increasing in November, reaching an extended period of high activity during January-February, and remaining elevated through March. Influenza A(H3N2) viruses predominated through February and were predominant overall for the season; influenza B viruses predominated from March onward. This report summarizes U.S. influenza activity* during October 1, 2017-May 19, 2018.†.
MeSH terms
-
Adolescent
-
Adult
-
Aged
-
Child
-
Child Mortality
-
Child, Preschool
-
Drug Resistance, Viral
-
Hospitalization / statistics & numerical data
-
Humans
-
Infant
-
Infant Mortality
-
Infant, Newborn
-
Influenza A Virus, H1N1 Subtype / drug effects
-
Influenza A Virus, H1N1 Subtype / genetics
-
Influenza A Virus, H1N1 Subtype / isolation & purification*
-
Influenza A Virus, H3N2 Subtype / drug effects
-
Influenza A Virus, H3N2 Subtype / genetics
-
Influenza A Virus, H3N2 Subtype / isolation & purification*
-
Influenza B virus / drug effects
-
Influenza B virus / genetics
-
Influenza B virus / isolation & purification*
-
Influenza Vaccines / chemistry
-
Influenza, Human / epidemiology*
-
Influenza, Human / mortality
-
Influenza, Human / prevention & control
-
Influenza, Human / virology
-
Middle Aged
-
Outpatients / statistics & numerical data
-
Pneumonia / mortality
-
Population Surveillance*
-
Seasons
-
Severity of Illness Index
-
United States / epidemiology
-
Young Adult