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Cat with toxoplasmosis

A cat with a infective Toxoplasmosis.

Toxoplasmosis is a serious disease transmitted by eating contaminated food or by contact with infected nasal discharge, saliva and feces of carrier animals. Young cats are most susceptible.

What role do cats play in the spread of toxoplasmosis?[]

Cats get Toxoplasma infection by eating infected rodents, birds or other small animals, or anything contaminated with feces from another cat that is shedding the microscopic parasite in its feces. After a cat has been infected, it can shed the parasite for up to two weeks. The parasite becomes infective one to five days after it is passed in the feces of the cat. The parasite can live in the environment for many months and contaminate soil, water, fruits and vegetables, sandboxes, grass where animals graze for food, litter boxes, or any place where an infected cat may have defecated.

What is toxoplasmosis?[]

Toxoplasmosis is an infection caused by a microscopic parasite called Toxoplasma gondii. More than 30 million people in the United States carry the Toxoplasma parasite. Toxoplasmosis can cause severe illness in infants infected before birth (when their mothers are newly infected just before or during pregnancy), or in persons with a weakened immune system.

How are people infected with Toxoplasma?[]

People become infected with toxoplasmosis several ways:

  • Eating food, drinking water, or accidentally swallowing soil that has been contaminated with infected cat feces.
  • Eating raw or undercooked meat from animals (especially pigs, lamb, or wild game) that have been infected with Toxoplasma.
  • Directly from a pregnant woman to her unborn child when the mother becomes infected with Toxoplasma just before or during pregnancy.

What are the symptoms of toxoplasmosis?[]

General symptoms of having toxoplasmosis include:

  • Fever
  • Loss of appetite
  • Coughing
  • Jaundice
  • Emaciation
  • Laboured breathing
  • Nervous system disturbances
  • Natural immunity

Individuals with healthy immune systems:

Most people who become infected with Toxoplasma do not know it and have no symptoms. However, when illness occurs, it is usually mild. Some may feel like they have the “flu,” with swollen lymph glands, or muscle aches and pain that last for several weeks or more. Rarely, eye disease occurs.

Individuals with weakened immune systems:

People with weakened immune systems may experience severe symptoms. The most common symptoms in people with HIV infection are headache, confusion, and fever. Other symptoms include seizures, poor coordination, and nausea or vomiting.

Infants infected before birth:

Most infants infected with Toxoplasma before birth show no symptoms at birth. However, many are likely to develop symptoms later in life. These include vision loss, mental disability, and seizures

How can I protect myself from toxoplasmosis?[]

Several steps can be taken to protect yourself and others from toxoplasmosis:

  • Change cat litter boxes daily. Toxoplasma takes more than one day to become infectious. If you are pregnant or have a weakened immune system, ask someone else to change the litter box. If this is not possible, wear disposable gloves and wash your hands thoroughly with soap and water afterwards.
  • Cover any outdoor sandboxes when not in use to keep cats from defecating in them.
  • Avoid adopting stray cats, especially kittens. Younger cats are more like to be releasing Toxoplasma in their feces.
  • Do not eat undercooked meat. Cook whole cuts of meat to at least 145°F (63° C) with a 3 minute rest, and ground meat and wild game to at least 160°F (71º C).
  • Wash all kitchen supplies (such as knives and cutting boards) that have been in contact with raw meat.
  • If you have a weakened immune system, it is important to talk to your health care provider about getting a blood test to determine if you have been infected with Toxoplasma.

How can I protect my cat from toxoplasmosis?[]

Protecting your cat from toxoplasmosis may also help to protect you from toxoplasmosis.

  • Feed your cat commercial dry or canned food.
  • Never feed cats raw meat because this can be a source of Toxoplasma infection.
  • Keep indoor cats indoors so they do not become infected by eating small animals.

Do I have to get rid of my cat?[]

No, you do not have to give up your cat. Owning a cat does not mean you will be infected with the parasite. It is 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 not likely to be infected with Toxoplasma. But, if you are pregnant, planning on becoming pregnant, or have a weakened immune system, it is important to protect yourself from infection.

Can toxoplasmosis be treated?[]

Yes. There is treatment for toxoplasmosis. In an otherwise healthy person, mild symptoms typically go away within several weeks to months and treatment is not needed. However, treatment may be recommended for an otherwise healthy person with eye disease due to toxoplasmosis. A woman who becomes infected during pregnancy can be treated with medication that may protect her unborn baby from toxoplasmosis. Mother and baby should be monitored closely during the pregnancy and after the baby is born.


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