Dubey J P
Vet Parasitol. 1986 Feb;19(3-4):181-223. doi: 10.1016/0304-4017(86)90070-1.
Toxoplasma gondii infection is highly prevalent in pigs in most countries, but little is known of its epizootiology. Transplacental infection appears to be less common than post-natal infection. Most pigs acquire subclinical infection. Clinical toxoplasmosis occurs mostly in young pigs. The frequency of oocyst- vs tissue cyst-acquired infections is unknown. Why clinical toxoplasmosis is more prevalent in Japan than in other countries is puzzling and needs investigation. In experimentally infected pigs, tissue cysts persist in edible organs for several months. They persist longer in the brain, heart and tongue than in other tissues.
在大多数国家，猪的弓形虫感染非常普遍，但对其动物流行病学了解甚少。经胎盘感染似乎比出生后感染少见。大多数猪获得的是亚临床感染。临床弓形虫病主要发生在幼猪身上。经卵囊感染与经组织囊感染的频率尚不清楚。为什么临床弓形虫病在日本比在其他国家更普遍，这令人费解，需要进行调查。在实验感染的猪中，组织囊在可食用器官中持续存在数月。它们在大脑、心脏和舌头中持续的时间比在其他组织中更长。
