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1989年在儋县选点普查,山区和丘陵区分别有50％和62.5％的调查点捕获微小按蚊,滨海平原区未发现。1990年在该县丘陵区调查18个点,全部发现微小按蚊,占人饵诱捕按蚊组成的52.5％。调查显示当前微小按蚊习性倾向于外食性、外栖性和对人、牛相同的趋向性。各地微小按蚊的传播疟疾强度不同,外来垦殖人员居民点、农村居民点和农场居民点的疟疾感染率分别为10％、2.9％和0.5％。提示微小按蚊已由20多年来的残存分布上升为次要媒介,或为部分地区的主要媒介。
In 1989, the census was conducted in Pixian County. Anopheles minimus was found in 50% and 62.5% of the surveyed sites in the mountainous and hilly areas, respectively, and no discovery was found in the coastal plains. In 1990, 18 hits were surveyed in the hilly area of the county, all of which were found to be Anopheles minimus, accounting for 52.5% of the total bait-trapped Anopheles. Surveys show that current Anopheles habitat tended to be eaten out, habitat and similar to humans and cattle. The strength of malaria transmitted by Anopheles minimus varied from 10% to 2.9% and 0.5% respectively, to foreign settlers, rural settlements and farm settlements. It indicates that Anopheles minor mosquito has risen from the remnant distribution in more than 20 years to a secondary medium or is the main medium in some areas.