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为了解丝虫病防治后期的流行动态，１９９６－１９９９年在原班氏丝虫病流行区吴川等６个县市开展了病原、媒介和血清学监测；在６个县市的３７个镇５６个管理区共血检６１８８９人，卡检出微丝蚴血症者；解剖致倦库蚊２１１２５只，在发现蚊体内有人体幼丝虫感染；１９９６年、１９９７年、１９９８年和１９９９年人群丝虫抗体阳性率分别为２．５２％、２．１２％、１．６６％和 １．５７％，与往年比较呈下降趋势，结果提示这些地区丝虫病的传播可能已被阻断。
In order to understand the epidemiological trend of the latter period of filariasis prevention and control, pathogen, vector and serological surveillance were conducted in 6 counties such as Wuchuan in the endemic filariasis area of Bancrofoo in 1996-1999. In 37 towns of 6 counties and cities, 56 Management area of a total of 61889 blood tests, card microfilariae who were detected; anatomy Culex pipiens pallens 21125, found in mosquitoes infected with human juvenile filariasis; 1996, 1997, 1998 and 1999 crowd silk The positive rates of worm antibodies were 2.52%, 2.12%, 1.66% and 1.57%, respectively, which showed a decreasing trend compared with previous years. The results suggested that the transmission of filariasis in these areas may have been blocked.