Toxoplasmosis is caused by Toxoplasma gondii, a protozoan parasite. It can be transmitted to humans in several ways: by eating undercooked, contaminated meat or foods that have been cross-contaminated during storage or preparation; direct or indirect contact with an infected animal, particularly cats; congenital transmission from an infected mother to her unborn child; and, rarely, via contact with infected blood or transplanted organs. Healthy individuals who become infected may not have any symptoms. However, toxoplasmosis can result in serious illness and retinal lesions. Congenital transmission may cause miscarriage, stillbirth, or abnormalities, and later vision loss, mental disability, and seizures.

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NHS Choices: Toxoplasmosis
Provides details of symptoms, causes, diagnosis, treatment, complications and prevention.
CDC: Toxoplasmosis
Features symptoms, fact sheet, laboratory tests, and articles.
Congenital Toxoplasmosis
Includes symptoms, diagnosis, treatment, and prevention of this protozoal disease.
eMedicine: Toxoplasmosis
Article by Joseph Sciammarella, MD, FACP, FACEP, DABMA.
Kidshealth: Toxoplasmosis
Focus is on the disease in children. Features signs, symptoms, prevention, and treatment.
MedicineNet: Toxoplasmosis
Doctor produceed consumer health information on toxoplasmosis including cuases, symptoms, risk factors, complications in babies and children, diagnosis, treatment and prevention.
MedlinePlus Medical Encyclopedia: Toxoplasmosis
Features symptoms, prevention, treatment, illustrations, and prognosis.
MedlinePlus: Toxoplasmosis
Includes articles and links.
Medmicro: Toxoplasma Gondii
Medical and scientific information on this organism and the disease it causes.
Information about Toxoplasma gondii and AIDS-related conditions, from The Body.
Toxoplasmosis in Cats
Cornell Feline Health Center fact sheet includes information about the condition in humans.
The ‘Cat Lady’ Conundrum
Relates that more than 60 million people in the United States may be infected by Toxoplasma gondii, and these have slower reflexes and are 2.5 times as likely to get into car accidents. (December 09, 2007)

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