海安县原属间日疟中度流行地区,60和70年代曾发生间日疟暴发流行,最高年份发病率分别为30.13％(1960年)和24.65％(1972年)。通过多年的防治,至1987年全县发病率降至10/万以下,1988年发病率最高的乡7.5/万。全县三级医疗卫生网基本健全。1985年起各乡开展发热病人疟原虫镜检,血检率达总人口的5％以上,各村采血片占70％左右,1989年全县血检率6.1％。 Hai’an County was originally endemic to Plasmodium vivax. Between the 1960s and 1970s, the outbreak of Plasmodium falciparum was prevalent. The highest annual incidence rates were 30.13% (1960) and 24.65% (1972). After years of prevention and treatment, the county’s incidence dropped below 10% in 1987 and reached 75,000 in 1988 with the highest incidence in 1988. The county health network three basic sound. Since 1985, all townships carried out microscopic examination of feverish patients with Plasmodium, the blood test rate reached more than 5% of the total population, and the village blood collection accounted for about 70%. In 1989, the county blood test was 6.1%.