title: Nonclinical Pseudomonas aeruginosa mastitis in a dairy herd.
abstract: Atypical Pseudomonas aeruginosa mastitis in a dairy herd was characterized by nonclinical mastitis that responded to antibiotic treatment, but only for the cows to become reinfected because of a persisting source of contamination in the milking parlor wash water. At least 36% of the cows were infected during a 37-month period. The source of infection was contaminated water, wash hoses, and spray nozzles in the parlor. After the source of infection was removed and long-term control measures were instituted, the nonclinical infections became less severe and shorter in duration and they occurred for a lesser percentage of the lactation period.
mesh_terms: D000818:Animals; D000900:Anti-Bacterial Agents / Q000627:therapeutic use; D002417:Cattle; D002418:Cattle Diseases / Q000175:diagnosis* / Q000188:drug therapy; D003140:Communicable Disease Control; D003612:Dairying; D005260:Female; D007774:Lactation; D008414:Mastitis, Bovine / Q000175:diagnosis* / Q000188:drug therapy; D008892:Milk / Q000382:microbiology; D011247:Pregnancy; D011552:Pseudomonas Infections / Q000188:drug therapy / Q000662:veterinary*; D011550:Pseudomonas aeruginosa / Q000302:isolation & purification; D014871:Water Microbiology
chemical_list: D000900:Anti-Bacterial Agents