Study on the transmission threshold value of bancroftian filariasis

摘要

Conclusions It showed that under the local natural environment the biting rate representing the vector density which was obtained by capture method was from 24.1 to 52.5 personight among the resi- dents who did not use mosquito nets, and 13.5 to 21 personight among the residents who used mosquito nets. The microfilarial rate of 0.56/100 in population with the average microfilarial density of 6.6 to 20.7 capita/ 60μ/ear blood of residual microfilaria-positive patients might be considered as the terminal threshold of trans- mission.