In the unlikely event that the test shows you're not immune, you must do your best to avoid young sick children, especially during the first three months of your pregnancy. It is then recommended that you receive this immunization after giving birth to prevent this same concern in the future. Chickenpox is particularly dangerous if contracted shortly before delivery. If you have not already had chickenpox, you should avoid anyone who might have or be coming down with this disease, particularly young children who have been around others with chickenpox. If you have not had chickenpox, you should receive the preventive vaccine when you are not pregnant.
Toxoplasmosis is primarily a danger for cat owners.
This illness is caused by a parasite infection common in cats. The infected animal excretes a form of the parasite in its stools, and anyone who comes in contact with infected stools could themselves become infected. If you own a cat, have it checked for toxoplasmosis before you become pregnant or as early as possible in your pregnancy. You can reduce the chances that your cat will contract toxoplasmosis by feeding it only commercially prepared cat food, which is processed in a way that destroys the organisms. Also, to decrease your own chances of being infected, have someone who is not pregnant clean the litter box daily.