title: Efficacy of air filters in preventing transmission of Newcastle disease.
mesh_terms: D000388:Air; D000391:Air Microbiology; D000818:Animals; D001826:Body Fluids / Q000382:microbiology; D002645:Chickens; D003428:Cross Infection / Q000517:prevention & control / Q000662:veterinary; D005069:Evaluation Studies as Topic; D005374:Filtration; D006385:Hemagglutination Inhibition Tests; D009521:Newcastle Disease / Q000175:diagnosis / Q000517:prevention & control*; D009522:Newcastle disease virus / Q000302:isolation & purification; D010357:Patient Isolators / Q000662:veterinary; D011201:Poultry Diseases / Q000175:diagnosis / Q000517:prevention & control*