Food poisoning can occur if food or water is contaminated with the stools (faeces) of infected cats, or if raw or undercooked meat from another animal carrying the parasite is eaten. The infection is known as toxoplasmosis. Symptoms of this type of food poisoning include swollen lymph glands and sometimes a skin rash. Toxins and chemicals Poisons (toxins) produced by bacteria can also contaminate food, as well as the bacteria themselves.