商城县位于河南省南部边缘的大别山区。与安徽、湖北比邻,地处古北、东洋两区的交错地带。境内地势起伏,河流水田密布,农作物以水稻、小麦为主。全县二十二个乡(镇),三百七十三个村,十万零七百九十二户,五十六万二千零二十一人。原以班氏丝虫为主,马来丝虫次之的混合感染流行区,防治前人群感染率为14.9%。一九七二年开始进行反复查治,一九七五年经省考核 Shangcheng County is located in the southern edge of Henan Province, the Dabie Mountains. And Anhui, Hubei, adjacent, is located in the ancient North and East of the staggered zone. Undulating terrain, the river paddy fields, crops to rice, wheat-based. The county twenty-two townships (towns), three hundred seventy-three villages, 10719, 516,200. The original Bancroftian filariasis, Malayi worm followed by the mixed epidemic area, the pre-control population infection rate was 14.9%. In 1972, repeated investigations and prosecutions began and the provincial examination was carried out in 1975