A prenatal nurse is providing instructions to a group of pregnant clients regarding measures to prevent toxoplasmosis. Which statement made by one of the clients indicates a need for further instruction?

Choice A rationale Thoroughly cooking meat to safe internal temperatures is a critical preventive measure because the Toxoplasma gondii parasite can exist in tissue cysts within undercooked lamb, pork, or venison. Heat effectively denatures the proteins and destroys the cellular integrity of the oocysts, rendering them non-infectious. This scientific practice ensures that the pregnant client does not ingest live parasites that could potentially cross the placental barrier and cause congenital fetal neurological or ocular damage. Choice B rationale This statement is dangerous and scientifically inaccurate because being exposed to a cat for years does not grant permanent immunity or guarantee that the cat is not currently shedding infectious oocysts. Toxoplasma gondii is shed in feline feces only for a short period after initial infection, but reinfection can occur. The oocysts require one to five days to become infectious in the environment, making daily litter box contact a high-risk activity for vertical transmission during pregnancy. Choice C rationale Cross-contamination in the kitchen is a significant vector for toxoplasmosis transmission. If kitchen surfaces, cutting boards, or utensils that have touched raw meat are not sanitized with hot, soapy water, the oocysts can be transferred to ready-to-eat foods. Scientific hygiene protocols focus on breaking the fecal-oral and foodborne routes of infection. Proper sanitation eliminates the microscopic parasites before they can be accidentally ingested by the pregnant woman, thereby protecting the developing fetus from infection. Choice D rationale Gardening is a known risk factor because outdoor soil often serves as a reservoir for Toxoplasma oocysts deposited by stray or outdoor cats. These oocysts are highly resilient and can survive in moist soil for many months. Wearing gloves provides a mechanical barrier that prevents the soil from sticking to the skin and subungual areas. Scientific prevention emphasizes avoiding direct skin contact with contaminated earth and performing thorough hand hygiene immediately after gardening to prevent accidental ingestion.