title: Accidental contamination of a specified-pathogen-free unit.
mesh_terms: D000391:Air Microbiology; D000821:Animal Feed; D000818:Animals; D002353:Carrier State; D002415:Cats; D005856:Germ-Free Life; D006168:Guinea Pigs; D006799:Housing, Animal; D007044:Hysterectomy / Q000662:veterinary; D051379:Mice; D009305:Nasopharynx / Q000382:microbiology; D010325:Pasteurella / Q000302:isolation & purification; D010326:Pasteurella Infections / Q000209:etiology / Q000517:prevention & control / Q000662:veterinary*; D051381:Rats; D012141:Respiratory Tract Infections / Q000209:etiology / Q000517:prevention & control / Q000662:veterinary; D012376:Rodent Diseases / Q000209:etiology* / Q000517:prevention & control; D013242:Sterilization; D014871:Water Microbiology