Properly cook meat and wash hands and utensils following
contact with raw meat.
Wear gloves when gardening or otherwise coming into contact
with soil.
Thoroughly wash fresh vegetables.
Remove feces from litter boxes daily (since sporulation to
an infectious form requires several days) and clean the boxes
regularly. (Boiling water is the only proven disinfectant other
than treatment with 10% ammonia for 10 minutes, which is potentially
very irritating for the person performing the cleaning.)
Avoid litter boxes and gardening immediately prior to and
during pregnancy.
Don't feed cats raw meat.
Maintain cats as totally indoor pets to avoid hunting and
infection from rodents.