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Hand, foot, and mouth disease (HFMD) is caused by enteroviruses, most commonly enterovirus 71 (EV71) and coxsackievirus A16 (CA16). In general, EV71 infection is more likely to induce severe complications and mortality than other enterovirus infections. The present study focuses on the molecular epidemiology of human EV71 strains in the Nanchang region of China in 2011. Overall, 651 specimens (throat or rectal swabs) were collected, and one-step reverse transcriptase-polymerase chain reaction was performed for analysis. Enteroviruses were detected in 62.2% (405/651) of the specimens. EV71, CA16, and other enteroviruses were found in 292, 73, and 40 specimens, respectively. Phylogenetic analysis of the VP1 region of the 8 EV71 strains found in the Nanchang region indicated that these strains belong to the C4 subgenotype. This study shows that the C4 subgenotype strain of EV71 was prevalent in the HFMD cases of Nanchang in 2011, and it reports the first incidence of adults being infected by EV71 in the Nanchang region. Thus, the surveillance of HFMD epidemiology and monitoring of HFMD severity should be continued.


Xianfeng Zhou, Guoyin Fan, Wen Xia, Fenglan He, Maohong Hu, Xiansheng Ni, Yue Zhang, Haiying Chen. Molecular epidemiology of human enterovirus 71 strains in the Nanchang region of China in 2011. Japanese journal of infectious diseases. 2013;66(2):149-50

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PMID: 23514913

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