摘要
目的 分析乌鲁木齐腹泻婴幼儿轮状病毒(Rotavirus,RV)感染流行情况及其基因型特征。方法 将2007年1-12月收集于乌鲁木齐市第一人民医院(儿童医院)的3 662例5岁以下门诊和住院腹泻患儿粪便标本,采用胶体金法和ELISA法检测RV,并随机选取部分RV阳性样本进行G/P基因分型。结果 3 662例样本中检出RV阳性1 470例,检出率为40.1%。对其中142例阳性样本(约10%)进行RV PCR基因分型,其中121例婴幼儿阳性分型结果显示:G1型比例最高占36.4%,其次为G3型(20.7%)、G2型(15.7%)和G9型(13.2%),G型混合感染占6.6%,G未能分型9例(7.4%)。P型分型以P[8]为主,占60.3%,其次为P[4](18.2%)和P[6](5.8%),P混合感染占15.7%。最主要的G/P组合为G1P[8](28.1%,34/121),其次是G3P[8](19.8%,24/121)、G2P[4](14.9%,18/121)和G9P[8](8.3%,10/121),并检测到不常见组合基因型如G1P[6]、G1P[4]、G9P[4]和G9P[6]等。21例新生儿(≤28 d)阳性样本的分型结果为:G型以G9为主,占42.9%(9例),其次是G1(4例),G3(3例),G2(1例),G混合感染3例,未能分型1例。P型以P[6]为主,占47.6%(10例),其次是P[8]及Pmixed各5例,P[4]1例。G/P基因型组合以G9P[6]为主(6例),其次G1P[8]、G3P[8]和G1P[6]各2例,G2P[4]和G9P[8]各1例。结论 本年度轮状病毒流行基因型复杂多样。婴幼儿RV感染以G1P[8]为主,新生儿RV感染则以G9P[6]为主。需警惕婴幼儿RV株与新生儿RV株的交叉混合感染而致新流行株的产生。
Objective To analyze the epidemiology and genotype characteristics of group A rotavirus in children under 5years old with diarrhea in Urumqi. Methods During the year of 2007,a total of 3 662 diarrhea stool samples were collected from outpatients and children hospitalized under the age of 5 in the First People's Hospital of Urumqi. RV antigens were detected by colloidal gold assay and ELISA. About 10% RV positive samples were randomly selected for G / P genotyping. Results RV was detected in 1 470 of 3 662 samples( 40. 1%) and a total of 142 positive samples were typed by PCR. Of the 121 infants and children with RV infection,G1 accounted for 36. 4%,followed by G3( 20. 7%),G2( 15. 7%) and G9( 13. 2%),the G mixed infection was 6. 6% and 9 couldn't be typed. For P-type,P[8]was the predominant genotype with 60. 3%,followed by P[4]( 18. 2%),and P[6]( 5. 8%). P mixed was 15. 7%. The major G / P combination was G1P[8]( 28. 1%),next for G3P[8]( 19. 8%),G2P[4]( 14. 9%) and G9P[8 ]( 8. 3%). G1P[6 ],G1P[4],G9P[4] and G9P[6] were also detected as the G / P uncommon combinations. 21 neonates with RV diarrhea showed G9 was the major G genotype( 9 /21),followed by G1( 4 /21),G3( 3 /21) and G2( 1 /21). G mixed infections were3 and 1 was undetermined. P[6] ranked first with 10,P[8] and P mixed were 5,respectively. One was P[4]. G9P[6]was found to be the major G / P type in neonates. G1P[8],G3P[8] and G1P[6] were detected for 2 each and G2P[4],G9P[8] for one each in neonates. Conclusion RV genotypes were complex and diverse in 2007 in Urumqi. G1P[8]was the main G / P combination in infants and children,and G9P[6]was the main in neonates. It needs to be mindful that the mixed infection between infant RV strains and neonatal RV strains will produce new epidemic strain.
出处
《中华全科医学》
2016年第8期1342-1344,1347,共4页
Chinese Journal of General Practice
基金
国家自然科学基金(30760232)
益普生腹泻研究基金项目(IDF-2007-12)