上海市人群附红细胞体感染状况的调查

目的了解上海市人群附红细胞体的感染状况。方法按照分层抽样调查的方法在地处中心城区、城郊结合区、郊区的3个区各抽取4个村或居委会作为调查点，血涂片镜检附红细胞体。结果共调查1603户的3003人，人群附红体的标化感染率为17．81％，3个区的标化感染率分别为29．50％、11．89％、7．73％，其差异具有统计学意义（Х^2=196．34，P〈0．05），且有从中心城区向郊区降低的趋势（Х^2=173．88，P〈0．05）；男女感染率（经年龄标化）分别为16．50％和19．82％，差异具有统计学意义（Х^2=5．18，P〈0．05）；年龄组感染率中以10～19岁组最高，与其余年龄组的感染率差异具有统计学意义（Х^2=213．59，P〈0．05）。感染人群总的平均感染度为1．66％，3个区的平均感染度分别为2．06％、1．20％、1．04％（F=8．19，P〈0．05）；年龄、性别感染度差异无统计学意义（F=1．27，P〉0．05；t=1．76，P〉0．05）；感染者具有家庭聚集性分布（Х^2=96．95，P〈0．05）。结论上海市人群中存在附红细胞体感染。主要表现为轻度感染，且具有地区、年龄分布差异和家庭聚集性等特点。

Epidemiological Survey of Eperythrozoon Infection in Shanghai Population

Objective To investigate the status of Eperythrozoon infection in Shanghai population. Method Three survey sites were set in urban, suburb and country areas. Blood samples were collected; smears were made, stained and detected for Eperythrozoon. The infection burden analysis was made after the figure was transformed by arcsine. Result 3003 individuals from 1603 households were included in the survey. Overall average infection rate of Eperythrozoon was 17.81%. The infection rates of three survy areas （29.50%, 11.89%, and7.73%） were significantly different （Х^2=196.34, P〈0.05）, and showed a decline trend from urban to country （Х^2=173.88,P 〈 0.05）. Significant difference was not found between the infection rates of men（16.50%） and women（19.82%,Х^2=5.18,P 〉 0.05）. The infection rate of 10-19 years old group was higher than the others （Х^2=213.59,P 〈 0.05）. The density of Eperythrozoon in urban, suburb and country were 2.06%, 1.20% and 1.04%, respectively, with an average of 1.66%. The density of Eperythrozoon in these three areas showed significantly differences （F=8.19,P 〈 0.05）. There were no significant difference of density in different genders and age groups, but the Eperythrozoon infection showed household congregation（Х^2=96.95,P 〈 0.05）. Conclusion Eperythrozoon infection was common in Shanghai, and the infection rate was different among districts and age groups. The infection showed household congregation and low density.