title: Respiratory syncytial virus pneumonia.
mesh_terms: D000917:Antibody Formation; D006801:Humans; D007111:Immunity, Cellular; D011024:Pneumonia, Viral / Q000276:immunology*; D012136:Respiratory Syncytial Viruses / Q000276:immunology; D010253:Respirovirus Infections / Q000276:immunology*