Toxoplasmosis is a significant cause of morbidity and mortality in AIDS patients and congenitally infected infants -- opportunistic infection for human
Toxoplasma gondii (刚地弓形虫)
Introduction
Toxoplasma gondii has very low host
specificity, and it will probably infect almost any mammal. It invades all kinds of cells except RBC
Life Cycle
Intermediate hosts—birds, rodents, or humans—are infected by ingesting the oocysts contained within the feces. The sporozoites travel in the blood and invade various tissues, forming trophozoites,pseudocysts and cysts
Oocysts can remain infectious for several months and are quite resistant to disinfectants(消毒剂), drying and freezing. Tissue cysts are less resistant, and are destroyed by proper cooking of food
– Peritonitis(腹膜炎), chorioretinitis(脉络视 网膜炎), etc.