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You’re pregnant? You DON’T have to give up the cat! You’re sitting at the doctor’s office nervously waiting. She walks in and utters those two words: “You’re pregnant.” You find yourself suddenly excited and anxious and stressed and confused all in one moment. Your mind races furiously as you consider the future and the changes to your life. Can we afford it? What about work? Is the house big enough? Who’ll take care of…THE CAT?! One of the most unfortunate myths when a pregnancy is diagnosed is that the cat has to go, either banished to the outdoors or removed from the home altogether. Frequently the owner doesn’t even know why the cat should leave; she just knows that she has been told to stay away from cats when she is pregnant. Many, many cats are rehomed or turned into shelters each year due to fear of toxoplasmosis. Toxoplasmosis is an infection caused by a microscopic parasite called Toxoplasma gondii (T. gondii). This infection can lead to miscarriage or severe illness and birth defects if a woman acquires toxoplasmosis during her pregnancy and transmits it to her unborn child. But concern for possible infection does not mean that Tabby needs to find a new home or be put outdoors to live. Owning a cat doesn’t mean that you will be infected with the disease and does not necessarily increase the risk of acquiring toxoplasmosis. It is very unlikely that you would be exposed to the parasite by touching an infected cat because cats usually do not carry the parasite on their fur. In addition, cats kept indoors that do not hunt prey or are not fed raw meat are unlikely to be infected with Toxoplasma. Pregnancy and cat ownership are not mutually exclusive events. To understand how the organism is acquired by humans, it is important to understand the life cycle of T. gondii. Once the parasite is ingested by a cat, usually by eating birds, rodents, or other small animals infected with the parasite, it is passed into the cat’s feces. After a cat has been infected, it can release the parasite into the feces for up to two or three weeks. Once in the feces, the parasite incubates for one to five days before becoming infectious to others - human or animal - who might ingest it. The parasite can live in the environment for many months and can contaminate any place where the cat may have defecated – soil, water, fruits and vegetables, sandboxes, grass where animals graze, and litter boxes. If the food source of animals such as pigs, sheep, or deer becomes contaminated with the cat’s feces, then the animals become infected. The cat is the only animal that sheds the infectious stage in its feces. Therefore, these animals ingesting the feces will not shed the parasite in their feces. However, the parasite forms cysts in the muscles of these animals ingesting the Toxoplasma, and their meat can be infective from these cysts. This life cycle therefore creates several opportunities for humans to become infected. Humans can acquire toxoplasmosis in various ways. The most common way that people contract the infection is by eating undercooked meat which contains the T. gondii within the tissue cysts in the meat. Pigs, sheep, deer, and other animals may eat contaminated feed or soil and become infected. Eating this meat when raw or undercooked can then lead to human infection. In addition, other food can become contaminated if the knives, utensils, cutting boards, or other foods in preparation have had contact with the raw meat. This can lead to ingestion and subsequent infection. Fruits and vegetables grown in contaminated soil may also be infective if ingested without first being washed adequately. Finally, direct ingestion of the organism can occur. This may happen by accidentally touching your hands to your mouth after activities such as gardening, cleaning the cat’s litter box, or touching anything that has come into contact with cat feces. Similarly, touching your hands to your mouth after handling infected raw meat can lead to direct ingestion. Drinking water contaminated with Toxoplasma is a less common source of infection. Infection through organ transplantation or a blood transfusion is possible but very rare. According to the Centers for Disease Control (CDC), more than 60 million people in the United States may carry the Toxoplasma parasite. Of those infected, most do not have symptoms or know they are infected because a healthy immune system keeps the parasite from causing illness. When illness does occur, it is usually mild. Infected individuals may have flu-like symptoms with swollen lymph nodes or muscle aches and pains that go away after several weeks or longer, and treatment is not needed. One study has shown that approximately 38% of pregnant women in the United States have evidence of prior toxoplasmosis infection. Evidence of previous infection means that the future mother is not at risk for transmitting the infection to her unborn child. And in most areas of the United States and Canada, fetal toxoplasmosis infection is rare. In the U.S., about 1 to 10 infants per 10,000 actually become infected before birth. Because of this low rate of infection, pregnant mothers are not screened for toxoplasmosis in this country. Cats only spread T. gondii in their feces for a few weeks after they are first infected with the parasite. Like humans, they rarely have symptoms when first infected, so most people don’t know whether their cat has been exposed to Toxoplasma. Kittens and young cats can shed millions of parasites in their feces after infection. Mature cats are less likely to shed Toxoplasma. Also like humans, once a cat has been infected with toxoplasmosis, he typically acquires immunity and only rarely can be reinfected. So it is usually only during his first exposure to Toxoplasma that he will excrete the infectious organism in his feces. Good tests are not available to determine whether you cat is passing the organism in its feces. Fortunately, you can easily avoid contracting toxoplasmosis from cat feces without giving up your feline baby. It is difficult for cats to transmit toxoplasmosis directly to their caregivers, and a pregnant woman is generally unlikely to contract the disease from her pet. There are a number of precautions that can be taken to prevent toxoplasmosis, however, to better ensure a healthy pregnancy. Change litter boxes daily. Remember, the organism in the feces becomes infective only after one to five days of incubation. Daily changing of the litter box removes feces before they are infectious. If you are pregnant, ask someone else to change the litter box. If you must change it, wear gloves and wash your hands thoroughly with soap and water afterwards. Other precautions not directly involving your cat can also be taken. Avoid stray cats, especially kittens. Younger cats are more likely to be shedding Toxoplasma. Don’t bring a new cat into your house that might have been an outdoor cat or might have been fed raw meat. Wear gloves while gardening and wash your hands after gardening. Cover outdoor sandboxes when not in use. Do not eat raw or undercooked meat. The internal temperature of the meat should reach at least 160° F. Wash hands well after handling raw meat. Wash all uncooked vegetables thoroughly. Wash cutting boards and utensils that may have come in contact with meat before using them to prepare other foods. In addition to these precautions, you can also protect your cat from acquiring toxoplasmosis. Feed your cat only commercial dry or canned food. Never feed your cat raw meat. Keep indoor cats indoors. If the recommendations above are followed, the risk of getting the disease is low. Cats can be continuous sources of joy and companionship to their owners during pregnancy and after childbirth. Your cat should remain as a loved member of the family while you await your new arrival. Whew. You walk out of the doctor’s office elated and relieved. She has just helped you to understand that your cat doesn’t have to leave after all. You head for home, excited about the future arrival and looking forward to the opportunity to teach your child about the joys and responsibilities of cat ownership and the incredible love and companionship that can be found with a feline friend.