The average infection rate of mosquitoes was 0.04%, and reduced year by year. 3 066 cases were tested by IFA, and with the positives 108, the average positive rate is 3.52%.

• 纵向监测显示，累计检出微丝蚴阳性者59例，全部在3~6年内自然转阴，蚊媒自然感染率为0.；04%25，并呈逐年下降趋势。