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闽北系武夷山脉南坡丘陵地带,包括崇安、建阳、浦城、光泽、松溪、政和、建瓯、顺昌8县及南平和邵武2市,位于北纬26°39′～27°55′和东经117°17′～118°50′之间,年平均气温18～19℃,年平均雨量1650～1850mm,海拔多在100～300m之间,以水稻田为主,其自然条件适合于雷氏按蚊嗜人亚种孳生繁殖和马来丝虫病流行。1958年调查时有144万人口,血检1134 879人,微丝蚴率18.2％,丝虫性象皮肿有29 895例(2.1％)。1956～1963年间普查
Northern Fujian Wuyishan southern slopes, including Chong’an, Jianyang, Pucheng, Guangze, Songxi, Zhenghe, Jian’ou, Shunchang 8 counties and Nanping and Shaowu 2 cities, latitude 26 ° 39 ’~ 27 ° 55 ’And the longitude 117 ° 17’ ~ 118 ° 50 ’, the annual average temperature is 18 ~ 19 ℃, the annual average rainfall is 1650 ~ 1850mm, and the altitude is mostly between 100 ~ 300m. The natural conditions are suitable for Anopheles stephensi sub-species reproduction and malaria filariasis epidemic. In the 1958 survey, there were 1.44 million people, 1134,879 blood tests, 18.2% of microfilariae, and 29,895 (2.1%) of filariasis cases. 1956 ~ 1963 census