机构地区:[1]上海长征医院感染科,200003 [2]复旦大学附属儿科医院传染病研究室
出 处:《中华传染病杂志》2012年第5期288-292,共5页Chinese Journal of Infectious Diseases
基 金:基金项目:上海市公共卫生优秀学科带头人培养计划资助项目(08GUD06);易普生腹泻基金项目(IDF-2008-01)
摘 要:目的监测上海地区腹泻儿童A组轮状病毒的分子流行病学,为本地区轮状病毒疫苗的推广使用提供背景依据。方法采集上海地区2008年8月至2009年7月门诊急性腹泻儿童的粪便标本910份,采用胶体金法检测A组轮状病毒抗原,使用套式反转录(RT)-PCR方法对轮状病毒进行G基因型和P基因型的分型检测。结果910份粪便标本中,共检出A组轮状病毒阳性268份,占29.4%。全年均可检出A组轮状病毒,流行高峰为2008年10月至2009年1月,检出率为38.3%~70.5%。〈3岁婴幼儿的A组轮状病毒腹泻有244例,占91.0%,各年龄组检出率以12-23个月龄组最高,达36.6%。268株A组轮状病毒中,G基因型以G1最多,为65株(24.3%),以下依次为G340株(14.9%)、G混合型37株(13.8%)、G227株(10.1%)、G914株(5.2%)、G45株(1.9%),其他G分型5株(1.9%),G未分型75株(28.0%);P基因型以PE8]为主,为147株(54.9%),其次为P[4]32株(11.9%)、P混合型6株(2.2%),其他P分型4株(1.5%),P未分型79株(29.5%)。主要G/P基因型组合包括G1P[8](13.4%)、G3PE83(13.4%)、G混合型P[8](10.1%)、G1PE4](8.2%)、G9P[8](2.2%)、G2P[4](1.9%)、G1P混合型(1.9%)。结论A组轮状病毒是上海地区婴幼儿腹泻的常见病原体,流行高峰为秋冬季节。目前注册的轮状病毒疫苗覆盖了上海地区绝大部分轮状病毒G/P基因型。Objective To explore the molecular epidemiological characteristics of group A rotavirus diarrhea in children in Shanghai and to provide the background data for the implementation of rotavirus vaccination. Methods A total of 910 stool samples were collected from the outpatient children with acute diarrhea from August 2008 to July 2009. Group A rotavirus was detected by using commercial colloidal gold device. Rotavirus strains were characterized for G and P genotypes using the nested reverse transcription polymerase chain reaction (RT-PCR). Results Group A rotavirus was detected in 268(29.40//oo) out of 910 stool samples. Rotavirus infection was found year-round and the peak season was from October 2008 to January 2009, with the detection rates ranging from 38.3 % to 70.5%. Ninety-one percent of children (244 cases) with rotavirus-associated diarrhea occurred inchildren 〈3 years of age. The detection rate of rotavirus was highest (36.6%) in children aged 12-- 23 months. Among the 268 group A rotavirus-positive strains, G1 was the most common G genotype (65 strains), accounting for 24.3%, followed by G3 (4O strains, 14.9%), G mixed genotypes (37 strains, 13.8%), G2 (27 strains, 10.1%), G9 (14 strains, 5.2%), G4(5 strains, 1.9%), other G types (5 strains, 1.9%), and unclassified G type (75 strains, 28.0%). P[8] and P[4] were the most common P genotypes, accounting for 54. 9% (147 strains) and 11. 9% (32 strains), respectively, followed by P mixed genotypes (6 strains, 2. 20//00) and other P genotypes (4 strains, 1. 5%), unclassified P type (79 strains, 29.5 M). The G/P genotype combinations were found as follows: G1P [8] (13.4N), G3P[8] (13.4%), GmixP[8] (10.1%), alP[4-1 (8.2%), G9P]-8] (2.2%), a2P [4] (1.9 %), G1Pmix (1.9 %). Conclusions Group A rotavirus is a major causative agent of diarrhea in infants and young children in Shanghai. The peak season of rotavirus infection appears in fall and winter. The currently li
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