title: Specific prophylaxis of enzootic chlamydial ovine abortion.
abstract: A vaccine against chlamydial ovine abortion was prepared according to an original method and experimentally applied to more than 500,000 animals in large breeding units. The vaccine induced a considerable seroconversion (as demonstrated by complement fixation tests) and reduced by 3--5 times the damage due to chlamydioses. Vaccination of primiparous ewes, followed by 2--3 annual revaccinations, gave good results, conferring resistance on the vaccinated animals.
mesh_terms: D000031:Abortion, Septic / Q000517:prevention & control / Q000662:veterinary*; D000034:Abortion, Veterinary / Q000517:prevention & control*; D000818:Animals; D001428:Bacterial Vaccines; D002689:Chlamydia / Q000276:immunology; D002690:Chlamydia Infections / Q000517:prevention & control / Q000662:veterinary*; D005260:Female; D011247:Pregnancy; D012756:Sheep; D012757:Sheep Diseases / Q000517:prevention & control*; D014611:Vaccination / Q000662:veterinary*
chemical_list: D001428:Bacterial Vaccines