Human infections are quite common in Canada and most other parts of the world. Most cases of toxoplasmosis are brief and include slight fever, enlarged lymph nodes and other flu-like symptoms which may not appear for 5 to 18 days after exposure. Some symptoms may last from a few days to several weeks. People with extremely weak immune systems may develop severe symptoms such as encephalitis, pneumonia or other life-threatening conditions. Infants born with congenital toxoplasmosis may develop permanent symptoms or conditions such as mental retardation or eye, liver or brain diseases.
Diagnosis involves a blood test, and symptoms can be treated with drugs.
Toxoplasma oocysts in cat feces may contaminate your hands while gardening or changing cat litter. Fruits and vegetables in the garden and meat may also become contaminated. Pregnant women should be particularly cautious as Toxoplasma can be transmitted from mother to fetus. People with weak immune systems should also be careful. Cook all meats thoroughly before eating.