TY  - GEN
TI  - Update: influenza activity--United States, January 11-17, 2004
SN  - 1545-861X
PY  - 2004///0123
KW  - Adolescent
KW  - Adult
KW  - Aged
KW  - Child
KW  - Child, Preschool
KW  - Humans
KW  - Infant
KW  - Influenza A virus
KW  - Influenza B virus
KW  - Influenza, Human
KW  - epidemiology
KW  - Middle Aged
KW  - Population Surveillance
KW  - United States
N1  - Publication Type: Journal Article
ER  -