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用反向被动血凝法调查了河南某地蚊虫携带乙型肝炎表面抗原(HBsAg)的情况。中华按蚊捕获数较少,未检出HBsAg,淡色库蚊和骚扰阿蚊中均检出HBsAg,以10只为一组,阳性率分别为10.3和4.6％。不同生理状况的蚊虫,如吸血、空腹(未吸血)和怀孕组的检出阳性率亦不同,分别为15.0、7.2和7.5％。发现吸血蚊随着胃血的消化,大部分HBsAg逐渐随粪便排出。蚊卵和幼虫中都未能检出HBsAg,说明HBsAg不能经卵传递。
Reverse passive hemagglutination was used to investigate the case of mosquitoes carrying HBsAg in some area of Henan Province. Anopheles sinensis catch less, did not detect HBsAg, Culex pipiens pallens and harassment of mosquitoes were detected HBsAg, with only 10 as a group, the positive rates were 10.3 and 4.6%. Mosquitoes with different physiological status, such as blood-sucking, fasting (without blood-sucking) and pregnant group, also showed different positive rates of 15.0, 7.2 and 7.5% respectively. It was found that with the digestion of blood gas in mosquitoes, most of the HBsAg gradually excreted with the feces. Egg and larvae have failed to detect HBsAg, indicating that HBsAg can not be delivered by egg.