RESULTS AND ANALYSIS OF FILARIASIS SURVEILLANCE IN HUBEI PROVINCE FROM 1989 TO 1996

To study the situation of filariasis after basic elimination and the transmissive effect of the residual microfilaemia, we carried out a cross and longitudinal surveillance from 1989 to 1996, and examined 1 237 871 persons, as a result, 140 mocrofilaemia cases were detected in the surveillance areas. Yearly microfilaremia rate decreased from 0.05% in 1989 to 0.004% in 1993 and no microfilaremia cases were found after 1994. In the same period, 89 957 mosquitoes were dissected and 3 positive mosquitoes were found. No infectious larvae were found in mosquitoes after 1993. The results showed that filariasis transmission has been interrupted in the Province.