According to Proietto, toxoplasmosis can be found in the feces of cats who get it from ingesting rodents and birds. Many women who become pregnant and have cats have been exposed to toxoplasma well before pregnancy, and so the baby and the mother have immunity to it and it will not cause infection. There is a blood test to determine if someone has been exposed.
"During pregnancy, women should not clean the litter box because of the risk of contracting the infection," Proietto said. "The box should be cleaned regularly. If they have no other choice, then gloves should be worn. As always, proper hand washing should be performed after handling any soiled material." (With a baby on the way, you might as well get used to this.)