title: Toxoplasmosis in rams: possible significance of venereal transmission.
abstract: Three rams were infected with tick-borne fever eight months after infection with toxoplasma. There was no clinical evidence of reactivation of the latent toxoplasma infection and semen samples from the rams were not infective to mice. Semen samples from 77 apparently normal rams were tested for toxoplasma infection by passage through mice; none of the samples produced patent infections in mice. Two rams with chronic toxoplasma infection were repeatedly mated with seronegative ewes. None of the ewes showed serological evidence of acquired infection and all lambed satisfactorily.
mesh_terms: D000818:Animals; D002908:Chronic Disease; D005260:Female; D008297:Male; D051379:Mice; D012661:Semen / Q000469:parasitology; D012749:Sexually Transmitted Diseases / Q000635:transmission*; D012756:Sheep; D012757:Sheep Diseases / Q000469:parasitology / Q000635:transmission*; D013984:Tick Infestations / Q000150:complications / Q000662:veterinary; D014124:Toxoplasmosis, Animal / Q000150:complications / Q000469:parasitology / Q000635:transmission*