弓形虫是一种寄生在细胞内的原虫。人类和多种动物感染弓形虫后可引起弓形虫病。人类感染弓形虫后大多数症状轻微,出现上呼吸道炎症,淋巴结肿大,皮疹及关节疼痛等而成为带虫者。孕妇感染弓形虫后病原体可经血流传给胎儿,引起流产、早产、死胎、胎儿宫内发育迟缓及新生儿畸形等不良后 Toxoplasma gondii is a parasitic protozoan in the cell. Toxoplasmosis can be caused in humans and in a variety of animals when they are infected with Toxoplasma gondii. Most human beings infected with Toxoplasma minor symptoms, upper respiratory tract inflammation, swollen lymph nodes, skin rashes and joint pain and become a worm. Pregnant women infected with Toxoplasma gondii pathogens after blood can be passed to the fetus, causing miscarriage, premature birth, stillbirth, intrauterine growth retardation and neonatal malformations and other adverse