弓形虫病是一种全世界广泛流行的人兽共患病 ,为先天性畸形和出生缺陷的感染病因之一。由于其临床症状的非典型性和寄生部位的广泛性 ,加之病原学检查因体液标本中的虫数往往不多 ,涂片和动物接种的检出率极低 ,因此常常造成漏诊和误诊。国内外有不少资料表明 ,中枢神经系统疾 Toxoplasmosis is a pandemic that is prevalent in the world and is one of the causes of congenital malformations and birth defects. Because of its atypical clinical symptoms and the wide range of parasitic sites, coupled with etiological examination due to the number of specimens in the body fluid is often small, smear and animal vaccination detection rate is very low, so often resulting in missed diagnosis and misdiagnosis. There are many domestic and foreign data show that central nervous system diseases