关键词: 中华按蚊, 间日疟原虫, 大劣按蚊, 感染率, 感染性, 地理株, 广西株, 易感性, 微小按蚊, 海南株

Abstract: Anopheles sinensis from Shanghai and Guangxi were experimentally infected with Ha-inan and Guangxi strains of Plasmodium vivax. It was found that both anopheline mos-quitoes had a very low susceptibility to the Guangxi strain, the gland infection rate being 0 and 12.3% (43.2% for Are, minimus serving as control), while they showed distinctly higher susceptibility to the Hainan strain, the respective gland infection rate being 36.4% and 43.6% (100% for An. minimus).Two lots of An. sinensis from Wuhan were experimentally infected with Guangxi strain of P. vivax from two patients. It was shown that they had just the same low susceptibility as An. sinensis from Guangxi. The gland infection rate of the two lots of mosquitoes was 4.6% and 30.6% respectively, although it has already been confirmed that An. sinensis from Wuhan was highly susceptible to the indigenous strain of P vivax. From the present experimental results and literature, it is evident that there exist in China different geographic strains of P. vivax with varied infectivity to Are. sinensis.