Toxoplasmosis in Swine and Rodents. Reciprocal Oral Infection and Potential Human Hazard.

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Abstract
The customary method of transmission of toxoplasmosis to man and to animals remains unknown. This report shows that infections are transmitted between swine and rodents when either animal is fed infected tissue from the other, likewise when pigs ingest infected swine offal. The feeding cycles described are reminiscent of those known in trichinosis. Similarities and differences are discussed, and implications for human disease pointed out. Whether there is a risk to the public, and if so, its extent, will require future studies on swine and on pork, under natural as well as experimental conditions.