为了解鄂西非稳定低疟区发病率降至1/万以下后的防治效果,于1987年和1989年应用IFAT进行了两次流行病学监测。巴东、恩施、利川3个监测点的试验结果,人群抗体阳性率均很低,3地两年的阳性率依次分别为0.75%和1.11%、0.57%和0.37%、0.18%和0.44%,15岁以下低年龄组的阳性率分别为0.61%和0.66%、0和0.37%、0和0.27%。表明疟疾确已降至低度,但15岁以下低年龄组仍有阳性,提示当地疟疾传播尚未阻断。 In order to understand the control effect after the morbidity in stable low malaria area in west of China dropped below 1/10 000, two epidemiological surveillances were conducted in 1987 and 1989 with IFAT. Badong, Enshi, Icheon three test points of the test results, the positive rate of human antibodies were very low, the positive rate of three years and two years were followed by 0.75% and 1.11%, 0.57% and 0.37%, 0.18% and 0.44%, respectively, The positive rates for the younger age group under 15 years were 0.61% and 0.66%, 0 and 0.37%, 0 and 0.27%, respectively. This indicates that malaria has indeed dropped to a low level, but the low-age group under 15 years of age is still positive, suggesting that local malaria transmission has not yet stopped.