Pyrrolidine dithiocarbamate inhibits enterovirus 71 replication by down-regulating ubiquitin–proteasome system

Objectives: To re-evaluate the epidemiology of hand, foot, and mouth disease (HFMD) in a non-vaccinated population in Zunyi, China. Methods: We used laboratory-based data from the Third Affiliated Hospital of Zunyi Medical College, Zunyi, China to assess the epidemiology of the HFMD caused by enteroviruses between January  2012 and November 2014. Real-time polymerase chain reaction was used to determine human enteroviruses from a total of 12313 probable cases enrolled in this retrospective study. All analyses were stratified by enterovirus serotype, gender, and age. Results: Virological results were available for 12313 cases of probable HFMD. A total of 5750 cases were positive for viral detection, and the positive rates of infection caused by other enteroviruses was 46.7%, EV71 9%, and CVA16 4.7%. During the study period there was a substantial increase in the occurrence of HFMD. Most of the HFMD patients (87.4%) were aged 0-59 months (median 24; range 0-59). Males showed a higher HFMD prevalence rate (62.4%) than females (37.6%). Conclusion: Enterovirus infection remains an important public health problem and other entroviruses are emerging as the major causative agent of the HFMD in Zunyi, China. Saudi Med J 2015; Vol. 36 (5): 593-598 doi: 10.15537/smj.2015.5.10859

An epidemic analysis of hand, foot, and mouth disease in Zunyi, China between 2012 and 2014

Hand, foot, and mouth disease (HFMD) is an arising public health problem in Asia, including China. Epidemiological data is necessary to enable judicious public health responses and interventions. We analyzed the epidemiological and laboratory data of 759,301 HFMD cases reported to the Hunan Provincial Center for Disease Control and Prevention from 1 January 2009 to 31 December 2014. Univariate and multivariable conditional logistic regression analyses were used to identify risk factors of fatality in HFMD. The incidence of HFMD was highest among children aged 1-3 years, compared with other age groups. Of the total HFMD cases, 7,222 (0.95%) were considered severe and 338 (0.04%) were fatal. Enterovirus-A71 was the major cause of severe and fatal cases (65.75% and 88.78%, respectively). For severe cases, the median time from symptom onset to diagnosis was 0.5 days (interquartile range [IQR] 0-1.5 days); the median time from diagnosis to severe illness was 2 days (IQR 1-3 days). For fatal cases, the median time from symptom onset to diagnosis was 0.5 days (IQR 0-1.5 days); the median time from diagnosis to death was 1.5 days (IQR 0.5-2.5 days). In multivariable analysis, the abuse of antibiotic, glucocorticoid and pyrazolone in village clinics at basic medical institutions were identified as independent risk factors for HFMD fatal cases. In conclusion, our results suggest that the future direction to control and respond to HFMD is intensive surveillance of enterovirus-A71 and improving the ability to diagnose disease and treat patients, especially in basic medical institutions.

/pdf/hand-foot-and-mouth-disease-in-hunan-province-china-2009-419e6umjdo.pdf

Hand, Foot, and Mouth Disease in Hunan Province, China, 2009-2014: Epidemiology and Death Risk Factors.

Association of viral replication capacity with the pathogenicity of enterovirus 71.

Hand, foot, and mouth disease (HFMD), which has led to millions of attacks and several outbreaks across the world and become more predominant in Asia-Pacific Region, especially in Mainland China, is caused by several Human Enteroviruses including new enterovirus, coxsakievirus and echovirus. In recent years, much research has focused on the epidemiological characteristics of HFMD. In this article, multiple characteristics of HFMD such as basic epidemiology, etiology and molecular epidemiology; influencing factors; detection; and surveillance are reviewed, as these can be help protect high risks groups, prevalence prediction and policy making for disease prevention.

/pdf/epidemiological-research-on-hand-foot-and-mouth-disease-in-2w4phkawcn.pdf

Epidemiological Research on Hand, Foot, and Mouth Disease in Mainland China

To study the genotype and molecular epidemiological features of enterovirus type 71 (EV71) in Guizhou Province. The hand-foot-mouth disease(HFMD) patients since 2008 in Guizhou Province were surveyed. EV71 RNA positive samples, including mild cases, death cases and cases of serious conditions, were used for subsequent cell culture and sequencing of VP1 complete gene. Genotypes were compared between domestic and foreign epidemic strains. The results showed that the main pathogenwas EV71 subtype C4a in 2008, 2009 and 2011. The nucleotide homology was 95. 3 - 99. 7% among 109 sequenced strains isolated in Guizhou Province. Guizhou strains were more similar to the representative strains from neighbor Province or City, including Shandong, Shanghai, Nanjing, Jilin and Ningbo. There was no distinct sequence difference among the isolates from either of death, mild case or case of serious condition at the nucleotide and amino acid levels. The diversity of nucleotide sequence of isolates was less within same region and year than those trans-regional strains or strains in different year.

[Analysis on molecular epidemiological features of enterovirus type 71 in Guizhou Province, 2008-2011].

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[Analysis on molecular epidemiological features of enterovirus type 71 in Guizhou Province, 2008-2011].