[Studies on the significane of sexual intercourse for the transmission of Toxoplasma gondii (author's transl)].

From 285 ejacula and 23 biopsy specimens of the testicles of men from childless marriages, no toxoplasms at all could be cultured in the mouse inoculation test. Testicles and accessory gonads of artificially infected male rabbits contained infective toxoplasms only up to the 29th day p.i. 8 artificially infected male rabbits did not transmit any agents through sexual intercourse to 13 toxoplasma-free female rabbits. One female animal became infected during the experiment. The route of infection is discussed. Experiments with ejacula of 4 artificially and freshly infected male rabbits did not lead to any Toxoplasma infection in mice, which had been inoculated with this material. From 50 testicles of sheep bound for slaughter, only in one case toxoplasms could be isolated in the mouse inoculation test. In virtue of the results in the literature and of our own experiments, the transmission of toxoplasms through sexual route does not seem to be of any vital epidemiological significance for men and animals.