Epidemiology of respiratory syncytial virus infection in Washington, D.C. I. Importance of the virus in different respiratory tract disease syndromes and temporal distribution of infection.

Antibody Formation Bronchiolitis, Viral/epidemiology,microbiology Child Child, Preschool Complement Fixation Tests District of Columbia Humans Infant Orthomyxoviridae Infections/diagnosis,epidemiology,immunology,microbiology Pneumonia, Viral/epidemiology,microbiology Respiratory Syncytial Viruses/immunology,isolation & purification,pathogenicity Respiratory Tract Infections/diagnosis,epidemiology,microbiology Seasons