疟疾在三峡地区曾广为流行,经防治后,1985年发病率已下降为2.2/万,但仍有34.7%的乡发生疟疾,局部暴发点和暴发流行的潜在因素依然存在。预计在水利工程施工期间,有疟疾暴发流行的危险.水库建成后的灌溉网络和低洼浸水地区,可能扩大按蚊的孳生场所,加剧疟疾流行。 Malaria was a widespread epidemic in the Three Gorges area. After its prevention and treatment, the incidence of malaria dropped to 22,000 in 1985, but malaria still occurred in 34.7% of the townships. The potential causes of the outbreaks and outbreaks still exist. It is estimated that there is a danger of the outbreak of malaria occurring during the construction of water conservancy projects, and the construction of irrigation networks and low-lying flooding areas after the completion of reservoirs may expand the breeding grounds for Anopheles mosquitoes and aggravate the malaria epidemic.