Respiratory syncytial virus infections.
D000293:Adolescent; D002648:Child; D002675:Child, Preschool; D005194:Family Practice; D006761:Hospitals; D006801:Humans; D007223:Infant; D007231:Infant, Newborn; D012136:Respiratory Syncytial Viruses / Q000302:isolation & purification; D012141:Respiratory Tract Infections / Q000175:diagnosis / Q000453:epidemiology / Q000382:microbiology*