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Human Influenza
United States
Infants
H1N1 Subtype Influenza A Virus
Influenza A virus
Young Adult
Newborn Infant
Influenza B virus
Pandemics
Disease Outbreaks
Seasons
Age Distribution
Incidence
Poisson Distribution
Retrospective Studies
Risk Factors
Hospitalization
Population Surveillance
Influenza Vaccines
Centers for Disease Control and Prevention (U.S.)
Co-Publications
8
7
6
5
4
2
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