上海市基本消灭疟疾后4年来的监测

FOUR-YEAR SURVEILLANCE AFTER MALARIA BEING BASICALLY ERADICATED IN SHANGHAI

上海市1986年达到了基本消灭疟疾后,1987～1990年进行了全面和重点监测。发热病人疟原虫血检,平均阳性率为0.32％,病例呈散在分布。居民疟原虫血检平均带中率为0.07％。外来流动人口抽样监测,4年的疟原虫带虫率分别为0.013％、0.32％、0.14％和0.06％。复查1983～1987年先后发病的疟疾患者296人,原虫阳性率为0。未发现嗜人按蚊;中华按蚊蚊群比和吸血趋性与常年无差异。结果表明本市基本消灭疟疾后的成果是巩固的,但仍存在不稳定因素,外源性输入病例逐年增加,外来流动人口中的带虫率高于当地居民,对上海市构成了潜在威胁,当前监测应抓住疟疾现症病人和流动人口管理。

Malaria was basically eradicated in Shanghai in 1986. During 1987~1990, a cross -sectional surveillance was conducted. The average positive rate for malaria parasite was 0. 32%; sampling the local residents , 0. 07% was positive for malaria parasite, 296 malaria cases were re-examined within five years, no malaria parasite was found ;the carrier rates of malaria parasite of the mobile population in each of the four years were 0. 013%, 0. 32%, 0. 14% and 0. 06%. No An. anthropophagus was found in Shanghai. the mosquito population ratio, blood sucking tendency, mosquito density and seasonal change of An. sinensis were not different from that of the average year.