Tapeworm eggs, on the other hand, are not directly infectious to people. Feline strains of coccidia and giardia do not appear to be infectious to humans. Much media attention has been brought to the zoonotic potential of toxoplasmosis, a type of coccidia that can cause birth defects in unborn babies. However, poorly cooked meat is a much more significant source of infection than pet cats. Pregnant women may be advised to wear gloves when handling cat feces or, better yet, assign another family member to this job.
Viruses are extremely species specific.
Feline Immunodeficiency Virus, Feline Infectious Peritonitis, and Feline Leukemia Virus can not cause illness in people. The purpose of this article is not to scare you into thinking that owning cats is hazardous to your health. But every hobby has associated risks, and your physician should be aware of the potential that the illness you have may be related to your hobby. I also want to caution breeders that when they are selling kittens, perhaps questions as to the presence of immunocompromised persons in the potential new home may be appropriate. In any case, a good sales contract should deal with the potential of zoonoses and offer you protection against being sued for large medical bills.