title: The isolation of parainfluenza 4 subtypes A and B in England and serological studies of their prevalence.
mesh_terms: D000293:Adolescent; D000328:Adult; D000367:Age Factors; D000368:Aged; D000818:Animals; D000906:Antibodies / Q000032:analysis*; D000941:Antigens; D002648:Child; D002675:Child, Preschool; D004739:England; D006168:Guinea Pigs; D006801:Humans; D007106:Immune Sera; D007223:Infant; D007231:Infant, Newborn; D008875:Middle Aged; D009500:Neutralization Tests; D009976:Orthomyxoviridae Infections / Q000453:epidemiology* / Q000276:immunology*; D018184:Paramyxoviridae Infections / Q000453:epidemiology / Q000276:immunology; D012141:Respiratory Tract Infections / Q000209:etiology; D018108:Respirovirus / Q000145:classification / Q000302:isolation & purification*; D012703:Serotyping
chemical_list: D000906:Antibodies; D000941:Antigens; D007106:Immune Sera