First of all, the saliva of pet cats contains a parasite called Toxoplasma gondii. This parasite is mainly transmitted by eating infected food or touching infected cat droppings. Toxoplasma infection is usually asymptomatic for most healthy people, but for pregnant women and people with weak immune system, Toxoplasma infection may lead to serious complications. Therefore, pregnant women and people with weak immune system should avoid contact with cat feces or wash their hands in time after contact.
Secondly, pet cats' paws may carry bacteria, such as "cat scratch disease". If scratched or bitten by a cat, it may cause redness, pain, fever and other symptoms. It is important to clean the wound in time and consult a doctor for proper treatment.