Surveillance of acute viral respiratory diseases in children.
D000293:Adolescent; D000328:Adult; D002648:Child; D002675:Child, Preschool; D005260:Female; D006801:Humans; D007223:Infant; D008297:Male; D009975:Orthomyxoviridae / Q000302:isolation & purification; D010614:Pharynx / Q000382:microbiology; D012141:Respiratory Tract Infections / Q000382:microbiology