[Filariasis elimination in Zoucheng City of Shandong Province: measures and effect].

Zoucheng was a high endemic area of bancroftian filariasis with Culex pipiens pallens as the principal transmitting vector. Transmission of the disease was interrupted in 1981. Epidemiological surveillance has been then carried out. After 1989, parasitological and immunological examinations were conducted for those cases previously with and without microfilaremia, entomological surveillance was also carried out. Results showed that the antibody level in inhabitants has been at normal level, and no infection has been found in mosquitoes.