"Humans can become infected by changing their infected cats’ litter boxes, eating unwashed vegetables, drinking water from a contaminated source, or more commonly, by eating undercooked or raw meat that is infested with cysts. Not washing kitchen knives after preparing raw meat before handling another food item also can lead to infection. Pregnant women can pass the parasite directly to their fetuses and are therefore advised not to change cat litter boxes to avoid possible infection."

That really narrowed it down