Survey on mastitis caused by environmental bacteria.
D000818:Animals; D002417:Cattle; D004777:Environment; D004927:Escherichia coli Infections / Q000662:veterinary*; D008414:Mastitis, Bovine / Q000453:epidemiology / Q000382:microbiology* / Q000401:mortality; D011552:Pseudomonas Infections / Q000662:veterinary*; D011550:Pseudomonas aeruginosa / Q000302:isolation & purification; D012988:Soil Microbiology; D014871:Water Microbiology