國家衛生研究院 NHRI:Item 3990099045/7840
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    题名: Epidemiology and seroepidemiology of human enterovirus 71 among Thai populations
    作者: Linsuwanon, P;Puenpa, J;Huang, SW;Wang, YF;Mauleekoonphairoj, J;Wang, JR;Poovorawan, Y
    贡献者: Division of Infectious Diseases
    摘要: BACKGROUND:Human enterovirus 71 (EV71) is an important pathogen caused large outbreaks in Asian-Pacific region with severe neurological complications and may lead to death in young children. Understanding of the etiological spectrum and epidemic changes of enterovirus and population's immunity against EV71 are crucial for the implementation of future therapeutic and prophylactic intervention.RESULTS:A total of 1,182 patients who presented with the symptoms of hand foot and mouth disease (67.3%) or herpangina (HA) (16.7%) and admitted to the hospitals during 2008-2013 were tested for enterovirus using pan-enterovirus PCR targeting 5'-untranslated region and specific PCR for viral capsid protein 1 gene. Overall, 59.7% were pan-enterovirus positive comprising 9.1% EV71 and 31.2% coxsackievirus species A (CV-A) including 70.5% CV-A6, 27.6% CV-A16, 1.1% CV-A10, and 0.8% CV-A5. HFMD and HA occurred endemically during 2008-2011. The number of cases increased dramatically in June 2012 with the percentage of the recently emerged CV-A6 significantly rose to 28.4%. Co-circulation between different EV71 genotypes was observed during the outbreak. Total of 161 sera obtained from healthy individuals were tested for neutralizing antibodies (NAb) against EV71 subgenotype B5 (EV71-B5) using microneutralization assay. The seropositive rate of EV71-B5 was 65.8%. The age-adjusted seroprevalence for individuals was found to be lowest in children aged >6months to 2years (42.5%). The seropositive rate remained relatively low in preschool children aged>2years to 6years (48.3%) and thereafter increased sharply to more than 80% in individuals aged>6years.CONCLUSIONS:This study describes longitudinal data reflecting changing patterns of enterovirus prevalence over 6years and demonstrates high seroprevalences of EV71-B5 NAb among Thai individuals. The rate of EV71 seropositive increased with age but without gender-specific significant difference. We identified that relative lower EV71 seropositive rate in early 2012 may demonstrate widely presented of EV71-B5 in the population before account for a large outbreak scale epidemic occurred in 2012 with due to a relatively high susceptibility of the younger population.
    日期: 2014-02
    關聯: Journal of Biomedical Science. 2014 Feb 18;21:Article number 16.
    Link to: http://dx.doi.org/10.1186/1423-0127-21-16
    JIF/Ranking 2023: http://gateway.webofknowledge.com/gateway/Gateway.cgi?GWVersion=2&SrcAuth=NHRI&SrcApp=NHRI_IR&KeyISSN=1021-7770&DestApp=IC2JCR
    Cited Times(WOS): https://www.webofscience.com/wos/woscc/full-record/WOS:000334643000002
    Cited Times(Scopus): http://www.scopus.com/inward/record.url?partnerID=HzOxMe3b&scp=84896708888
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