云南省富宁县一起春游学生病毒性甲型肝炎暴发疫情调查  

Survey of an hepatitis A outbreak among students after spring outing in Funing county,Yunnan

作　　者：孔毅[1] 罗梅[1] 李娇[1] 

机构地区：[1]云南省疾病预防控制中心,云南昆明650022

出　　处：《疾病监测》2009年第11期896-897,共2页Disease Surveillance

摘　　要：2008年4月22日至5月11日洞波中学确诊的26例现症住院病毒性甲型肝炎(甲肝)病例为病例组,采用1:2配对的方法,选择同班、同性别、未接种过甲肝疫苗、未发病的52名同学为对照组,进行危险因素病例对照调查分析。结果,洞波中学新址校区甲肝罹患率为29.51%;发病与春游饮用未经消毒处理的山沟水有关联(χ2=4.551,P=0.033),OR=4.865(ORU=23.204,ORL=1.020)。The paper was designed to conduct field epidemiological survey and analysis on an hepatitis A outbreak after spring outing among the students of a middle school in Dongbo township of Yao ethnic group in Funing county. Descriptive epidemiological analysis and case control study were conducted to identify the risk factors by taken 26 hospitalized students of the middle school who were diagnosed as hepatitis A during 22 April - 11 May, 2008 as the case group and 52 non - sick classmates of same gender and without receiving hepatitis A vaccination as the control group. The attack rate was 29.51% among the students, and the case - control study indicated that the outbreak of hepatitis A was associated with drinking untreated water from mountain stream during the spring outing （χ^2 = 4. 551, P = 0. 033 ）, OR = 4. 865 （ ORU = 23. 204, ORL = 1. 020）. The difference on the incidence among the students who went to sightseeing to same place and drinking the water at different time （late March and late April ） showed statistical significance （χ^2 = 16. 201, P = 0.000）. The outbreak of hepatitis A was associated with drinking the untreated stream water which was once polluted.

关 键 词：甲肝 暴发疫情 危险因素 

分 类 号：R181.3[医药卫生—流行病学] R512.6[医药卫生—公共卫生与预防医学]