title: Update on mastitis. I. Control measures in England and Wales. How have they influenced incidence and aetiology?
authors.forename: J M
authors.initials: JM
authors.lastname: Booth
mesh_terms: D000818:Animals; D002417:Cattle; D004739:England; D005260:Female; D008414:Mastitis, Bovine / Q000453:epidemiology / Q000209:etiology / Q000382:microbiology / Q000517:prevention & control*; D014852:Wales