Analysis of etiological characteristics of hand-foot-mouth disease (HFMD) in Lu'an City from 2010 to 2018
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摘要:
目的 分析2010-2018年六安市手足口病病原学特征,为手足口病的防控提供科学依据。 方法 收集2010-2018年六安市各县区手足口病临床诊断病例咽拭子样本,采用实时荧光定量PCR技术进行肠道病毒核酸检测,并对检测结果进行分析。 结果 在采集的2 360份手足口病临床诊断病例咽拭子样本中,肠道病毒核酸检测阳性的有1 085份(45.97%),其中肠道病毒71型(Enterovirus 71, EV71) 382份(35.21%),柯萨奇病毒A16型(Coxsackievirus A16, COXA16)334份(30.78%),柯萨奇病毒A6型(Coxsackievirus A6, COXA6)169份(15.58%),柯萨奇病毒A10型(Coxsackievirus A10, COXA10)15份(1.38%), 其他肠道病毒185份(17.05%)。2010-2014年及2016年EV71为优势流行株(χ2=188.555, P < 0.001),2015年和2017年以COXA6成为优势流行株(χ2=258.732, P < 0.001)。从检测结果看,不同县区阳性率存在统计学差异(χ2=68.879, P < 0.001),以叶集区最高(81.25%, 52/64),霍邱县最低(30.41%, 52/171)。1~3岁年龄组患病人数居高,占各年龄组总阳性数的68.11%(739/1 085)。1 085例阳性病例中男性705例,女性380例,但是阳性检出率无性别差异(χ2=1.354, P=0.245)。 结论 六安市手足口病病原为多型别共存,每年的优势毒株均发生变化,年龄、地域和性别等因素均可影响手足口病的流行,加强手足口病的监测,有利于该病的防控。 Abstract:Objective The etiogical characteristics of hand-foot-mouth disease (HFMD) in Lu'an City from 2010 to 2018 were analyzed to provide basis for the prevention and control of HFMD. Methods Pharyngeal swabs were collected from clinical-diagnosis-case of HFMD in all counties and districts of Lu'an City from 2010 to 2018. Quantitative real-time PCR was used to detect Enterovirus nucleic acid, and the detection results were analyzed. Results Among the 2 360 pharyngeal swabs collected from clinical-diagnosis-case of HFMD, 1 085 (45.97%) were positive from Enterovirus. There were 382 (35.21%) of Enterovirus 71 (EV71), 334 (30.78%) of Coxsackievirus A16 (COXA16), 169 (15.58%) of Coxsackievirus A6 (COXA6), 15 (1.38%) of Coxsackievirus A10 (COXA10), and 185 (17.05%) of other Enteroviruses. EV71 was the dominant strain from 2010 to 2014 and 2016 (χ2=188.555, P < 0.001), and COXA6 was the dominant strain in 2015 and 2017 (χ2=258.732, P < 0.001). The positive rate was significantly different in different counties (χ2=68.879, P < 0.001), with the highest rate in Yeji District (81.25%, 52/64), and the lowest rate in Huoqiu County (30.41%, 52/171). The number of patients in 1-3-year-old group was the highest, accounting for 68.11% (739/1 085) of the total positive cases in each age group. Among the 1 085 positive cases, 705 were male and 380 were female, but there was no statistical difference in the positive detection rate (χ2=1.354, P=0.245). Conclusions There are various types of HFMD pathogens in Lu'an City, and the dominant strains change every year. Factors such as season, age, region and gender can affect the prevalence of HFMD. Strengthening the monitoring of HFMD pathogen is helpful to prevent and control HFMD. -
Key words:
- Hand-foot-mouth disease (HFMD) /
- Enterovirus /
- Etiology
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表 1 2010-2018年六安市手足口病病原检测结果[n(%)]
Table 1. Pathogen detection results of HFMD in Lu'an City from 2010 to 2018 [n(%)]
年份(年) 标本数 病毒阳性数 EV71 COXA16 COXA6 COXA10 其他EV 2010 232 117(50.43) 74(63.25) 41(35.04) 0(0.00) 2(1.71) 0(0.00) 2011 283 160(56.54) 71(44.38) 51(31.88) 0(0.00) 0(0.00) 38(23.75) 2012 268 130(48.51) 81(62.31) 27(20.77) 6(4.62) 0(0.00) 16(12.31) 2013 155 49(31.61) 19(38.78) 4(8.16) 1(2.04) 2(4.08) 23(46.94) 2014 279 107(38.35) 53(49.53) 22(20.56) 1(0.93) 0(0.00) 31(28.97) 2015 296 130(43.92) 27(20.77) 31(23.85) 40(30.77) 2(1.54) 30(23.08) 2016 319 101(31.66) 45(44.55) 17(16.83) 10 (9.90) 0(0.00) 29(28.71) 2017 69 24(34.78) 3(12.5) 8(33.33) 12(50.00) 1(4.17) 0(0.00) 2018 459 267(58.17) 9(3.37) 133(49.81) 99(37.08) 8(3.00) 18(6.74) 合计 2 360 1 085(45.97) 382(35.21) 334(30.78) 169(15.58) 15(1.38) 185(17.05) χ2值 92.438 237.781 81.832 228.054 14.633a 110.942 P值 < 0.001 < 0.001 < 0.001 < 0.001 0.018a < 0.001 注:a表示采用Fisher确切概率法。 表 2 2010-2018年六安市不同县区肠道病毒分布[n(%)]
Table 2. Distribution of Enterovirus nucleic acid in different counties in Lu'an City from 2010 to 2018 [n(%)]
地区 标本数 病毒阳性数 EV71 COXA16 COXA6 COXA10 其他EV 金安区 467 204(43.68) 71(34.80) 78(38.24) 28(13.73) 3(1.47) 24(11.76) 裕安区 342 153(44.74) 57(37.25) 68(44.44) 9(5.88) 1(0.65) 18(11.76) 霍邱县 171 52(30.41) 7(13.46) 7(13.46) 27(51.92) 0(0.00) 11(21.15) 霍山县 233 129(55.36) 42(32.56) 47(36.43) 25(19.38) 1(0.78) 14(10.85) 金寨县 505 207(40.99) 69(33.33) 60(28.99) 28(13.53) 1(0.48) 49(23.67) 舒城县 196 106(54.08) 34(32.08) 24(22.64) 23(21.70) 2(1.89) 23(21.70) 叶集区 64 52(81.25) 6(11.54) 8(15.38) 23(44.23) 3(5.77) 12(23.08) 寿县 382 182(47.64) 96(52.75) 42(23.08) 6(3.30) 4(2.20) 34(18.68) 合计 2 360 1 085(45.97) 382(35.21) 334(30.78) 169(15.58) 15(1.38) 185(17.05) χ2值 68.879 49.562 42.445 122.146 8.360a 20.887 P值 < 0.001 < 0.001 < 0.001 < 0.001 0.195a 0.004 注:a表示采用Fisher确切概率法。 表 3 2010-2018年六安市不同年龄组肠道病毒核酸阳性分布[n(%)]
Table 3. Comparison of nucleic acid positive rates of Enteroviruses in different age groups in Lu'an City from 2010 to 2018 [n(%)]
年龄(岁) 标本数 病毒阳性数 EV71 COXA16 COXA6 COXA10 其他EV 0~ 92 37(40.22) 15(40.54) 9(24.32) 8(21.62) 1(2.70) 4(10.81) 1~ 457 214(46.83) 65(30.37) 39(18.22) 69(32.24) 6(2.80) 35(16.36) 2~ 611 277(45.34) 94(33.94) 66(23.83) 51(18.41) 3(1.08) 63(22.74) 3~ 516 248(48.06) 92(37.10) 96(38.71) 21(8.47) 2(0.81) 37(14.92) 4~ 321 150(46.73) 61(40.67) 57(38.00) 11(7.33) 2(1.33) 19(12.67) 5~ 173 79(45.66) 30(37.97) 30(37.97) 5(6.33) 0(0.00) 14(17.72) 6~ 93 39(41.94) 14(35.90) 17(43.59) 2(5.13) 1(2.56) 5(12.82) 7~ 93 40(43.01) 11(27.50) 20(50.00) 2(5.00) 0(0.00) 7(17.50) >18 4 1(25.00) 0(0.00) 0(0.00) 0(0.00) 0(0.00) 1(100.00) 合计 2 360 1 085(45.97) 382(35.21) 334(30.78) 169(15.58) 15(1.38) 185(17.05) χ2值 4.096 7.056 46.133 77.169 8.406 15.663 P值 0.848 0.531 < 0.001 < 0.001 0.433a 0.047 注:a表示采用Fisher确切概率法。 -
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