What protozoan parasite is acquired by the oral route,but once ingested can readily cross the placenta causing an infection in the fetus that can result in a number of congenital defects?

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Toxoplasma gondii is acquired by ingestion of contaminated food, water or soil. Once ingested, it can cross the placenta and cause congenital defects such as brain damage, blindness, and hearing loss in the fetus. Giardia intestinalis, Cryptosporidium parvum, and Cyclospora cayetanensis are protozoan parasites that primarily affect the gastrointestinal tract and do not typically cause congenital defects.

What Protozoan Parasite Is Acquired by the Oral Route,but Once