云南恙虫病立克次体血清分型

Studies on Serotyping of Rickettsia tsutsugamushi in Yunnan

263份人群阳性血清及48份菌株免疫血清的分型结果：Karp型为主要流行型，分别占58．6％及52％；Gilliam型为25．4％及45，8％；Kato型只占2．3％及2％；两型以上混合感染者仅见于人群血清，共13．7％。但在西部澜沧江、怒江流域的流行区中，Gilliam型的比例则明显增高，其菌株免疫血清的Gilliam型甚至略高于Karp型。38份不同动物宿主立克次体株的免疫血清分型结果，未发现宿主种类与血清型别之间有任何关系，同样，血清型别与毒力强弱也不存在相关性。用4株经定型、毒力测定的立克次体株进行交叉保护力试验，表明不同抗原型的恙虫病立克次体之间有很强的交叉保护力。

263 samples of humen population's postive sera and 48 samples of strains immune sera were provided forserological typing, the results showed that type Karp was a principle epidemic type, in 58. 6% and 52%; typeGilliam was 25. 4% and 45. 8%;and type Kato was only a few samples for 2. 3% and 2%, respectively. The complex type more than two types were totally found only in humen population's srea samples for 13. 7 %. But rate oft