Integrated approach to malaria control emphasizing reduction of man-mosquito contact
Liu, Y.L.; Wu, K.S.; Zhang, F.S.; Zhang, Y.G.; Jia, J.X.; Jiang, B.Q.; Zhang, J.Y.; Zhou, S.L.; Jiang, W.K.; Wang, K.A.
Chinese Medical Journal 99(11): 879-884
1986
ISSN/ISBN: 0366-6999 PMID: 3107925 Document Number: 278785
This study was carried out from 1980 to 1985 in Daishan Township, Huang-Huai Plain, a vivax malaria endemic area transmitted by Anopheles sinensis. Since the 1950's construction of an irrigation system and water conservancy works and expansion of rice fields have brought increases both in human-mosquito contact and in the vectorial capacity of the plain. Consequently, the number of malaria cases increased greatly and mass drug administration (MDA) alone did not bring about malaria control. Considering the bionomical behavior of An. sinensis, the sole vector of malaria transmission, the villagers, habits and local conditions, an integrated approach was undertaken on trial and assessed parasitologically, serologically, and entomologically. The approach included urging the villagers to sleep indoors and to use mosquito-nets, improving ventilation in houses by installing back windows and reducing the human infection source by MDA and case treatment. The annual parasite incidence (API) of malaria decreased from 180.8% in 1980 to 0.5% in 1985. Although MDA was stopped in 1983-1985 malaria incidence continued to decrease, proving that reduction of human-mosquito contact can decrease the man-bite rate, the human blood index, the vectorial capacity of An. sinensis, and the malaria transmission rate. Field trial of the integrated approach is successful for malaria control in the area tested.