一、浙江平湖县4个村钩虫感染情况的调查 1938年4月我站在浙江医学研究院寄生虫病研究所的指导下,用改良洪氏虫卵计数法对曹乔乡勤安、百家湾、陈家浜、石龙4个村3岁以上的人群3112例进行粪检,并作虫卵计数。钩虫感染程度分别为克粪虫卵数1～999个为Ⅰ度;1000～2999为Ⅱ度:3000～9999为Ⅲ度;10000以上为Ⅳ度。取钩虫卵阳性者粪便用玻管滤纸培养法培养钩虫幼虫,鉴定虫种。 结果:3112例中,钩虫感染者1948例.感染率 A survey of hookworm infections in 4 villages in Pinghu County, Zhejiang Province In April 1938, I stood under the guidance of Institute of Parasitic Diseases, Zhejiang Academy of Medical Sciences, Bay, Chenjiabang, Shilong 4 villages over the age of 3 3112 cases of fecal examination, and eggs count. Hookworm infection levels were 1 to 999 grams per gram of fecal eggs for the first degree; 1000 ~ 2999 for the second degree: 3000 ~ 9999 for the third degree; 10000 for the fourth degree. Take hookworm egg-positive stool culture with glass tube filter paper hookworm larvae, identification of species. Results: In 3112 cases, 1948 cases were infected with hookworm infection rate