once too cold for its survival. Higher temperatures increase the survival time of T. gondii. More snowmelt and precipitation can increase the amount of T. gondii oocysts that are transported via river flow. Shifts in bird, rodent, and insect populations and migration patterns can impact the distribution of T. gondii due to their role as reservoir and vector. Urbanization and natural environmental degradation are also suggested to affect T. gondii transmission and increase risk of infection. See also Toxoplasmic chorioretinitis TORCH infection Pyrimethamine References Parts of this article are taken from the public domain CDC factsheet: Toxoplasmosis Bibliography External links How a cat-borne parasite infects humans (National Geographic) Toxoplasmosis at Health Protection Agency (HPA), United Kingdom Pictures of Toxoplasmosis Medical Image Database Video-Interview with Professor Robert Sapolsky on Toxoplasmosis and its effect on human behavior (24:27 min) Conoidasida Cat diseases Health issues in pregnancy Mind-altering parasites Parasitic infestations, stings, and bites of the skin Poultry diseases Protozoal diseases Zoonoses Wikipedia medicine articles ready to translate Disorders causing seizures Biology of bipolar disorder Biology of obsessive–compulsive disorder Medical triads Wikipedia emergency medicine articles ready to translate