2012年开江县肺吸虫病流行情况调查

Survey on the Epidemics of Paragonimiasis,Kaijiang County,2012

[目的]摸清开江县易感人群和中间宿主肺吸虫感染情况,为防制提供科学依据。[方法]2012年4～6月,在开江县历年有肺吸虫病病例的新宁镇、天师镇、梅家乡抽取小学生和村民,采血检测肺吸虫抗体;捕捉螃蟹检测肺吸虫囊蚴。[结果]检测786人,血清肺吸虫抗体阳性的34人,阳性率为4.33%。抗体阳性率,新宁镇为1.91%,天师镇为3.60%,梅家乡为7.30%(P<0.01);男性为5.37%,女性为3.29%(P>0.05);各个年龄组为3.01%～7.04%(P>0.05)。发现肺吸虫病患者5例,患病率为0.56%,临床上均以皮下游走性包块就诊,无肺部典型症状。检查螃蟹636只,检出肺吸虫囊蚴的35只,感染率为5.50%,其中梅家乡为7.35%,新宁镇为5.00%,天师镇为3.90%(P>0.05)。调查的786人中,喝生水的占81.81%,玩螃蟹的占60.56%,吃螃蟹的占60.18%。生吃螃蟹者所占比例,为全部调查对象的16.54%,其中梅家乡为29.56%,天师镇为5.60%,新宁镇为13.36%(P<0.01)。调查对象中肺吸虫病患者和血清抗体阳性者所占比例,生吃螃蟹者为16.15%,半生吃螃蟹者为5.33%,熟吃和不吃螃蟹者为0.00%(P<0.01);喝生水者为5.44%,不喝生水者为2.80%(P>0.05);玩螃蟹者为6.09%,不玩螃蟹者为3.23%(P>0.05)。[结论]开江县为肺吸虫病低流行区,肺吸虫感染主要是生吃螃蟹所致。

[Objective]To understand the situation of susceptible groups and hosts of paragonimiasis infection in Kaijiang county,so as to provide scientific basis for its control and prevention. [Methods]Blood samples were collected from the pupils and villagers in Xinning Town,Tianshi Town, Meijia Xiang in Kaijiang county over the years with paragonimiasis cases for detection of Paragonimus antibody and detection of Paragonimus metacercariae in crabs caught during April- June, 2012. [Results]Of 786 people detected, 34 people＇s serum were Paragonimus antibody positive. The positive rate was 4. 33%. The antibody positive rate in Xinning Town was 1. 91%, Tianshi Town, 3.60%, Meijia Town, 7.30% （ P 〈 0.01） ;5.37% in males and 3.29% in females;Each age group was 3.01%-7.04%（ P 〉0. 05）. 5 people were found paragonimiasis,0：56 % prevalence rate. It＇s called subcutaneous migrating mass clinically. 636 crabs were detected, with Paragonimus metacercariae in 35 crabs, 5.50 % infection rate, including Xinning Town, 5.00 %, Tianshi Town, 3.90 %, Meijia Town, 7.35 % （ P 〉0. 05）. Among the 786 people,81.81 % of them drank the unboiled water, 60.56% played with crabs and 60.18% ate crabs. People eating crabs accounted for 16.54%, including Xinning Town 13.36%, Tianshi Town 5.60% ,Meijia Xiang 29.56%（ P 〈0.01）. Investigation object in the proportion of patients with paragonimiasis and serum antibody positive： 16.15 % eating raw crabs, 5.33 % eating partially cooked crabs, 0.00% （ P 〈0.01） eating cooked crabs or non-eating; 5.44 % drinking unboiled water; 6.09 % playing with crabs, 3.23 % （ P 〉 0. 05） others. [Conclusion] Kaijiang county is the low prevalence area of paragonimiasis, and the paragonimiasis infection is mainly caused by eating raw crabs.