title: Serological evidence of infectious bovine rhinotracheitis, bovine virus diarrhoea and parainfluenza-3 viruses in calves in El Salvador.
mesh_terms: D000818:Animals; D002417:Cattle; D002418:Cattle Diseases / Q000453:epidemiology / Q000382:microbiology*; D001908:Diarrhea Viruses, Bovine Viral / Q000302:isolation & purification*; D004544:El Salvador; D007242:Herpesvirus 1, Bovine / Q000302:isolation & purification*; D010224:Parainfluenza Virus 3, Human / Q000302:isolation & purification*; D012328:RNA Viruses / Q000302:isolation & purification*; D018108:Respirovirus / Q000302:isolation & purification*