Establishment of Asia-Pacific Network for Enterovirus Surveillance.

This article demonstrated the summaries of the first expert meeting, 2017 International Workshop on Enterovirus Surveillance and Vaccine Development, held by APNES in Taipei, Taiwan, March 2017. PMID: 31679864 [PubMed - as supplied by publisher]
Source: Vaccine - Category: Allergy & Immunology Authors: Tags: Vaccine Source Type: research

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In this study, the recombinant nonstructural 2B protein of EV-A71 was successfully produced in human neuroblastoma SH-SY5Y cells and evaluated for its effects on induction of the cell apoptosis and the pathway involved. The EV-A71 2B-transfected SH-SY5Y cells showed significantly higher difference in the cell growth inhibition than the mock and the irrelevant protein controls. The transfected SH-SY5Y cells underwent apoptosis and showed the significant upregulation of caspase-9 (CASP9) and caspase-12 (CASP12) genes at 3- and 24-h post-transfection, respectively. Interestingly, the level of cytosolic Ca2+ was significantly ...
Source: Journal of NeuroVirology - Category: Neurology Source Type: research
In this study, the vp1 gene of Enterovirus 71 (EV71) and Coxsackievirus B3 (CB3) was inserted into the vector pET22b (+) to form the respective expression plasmids pEVP1 or pCVP1, and then transformed into Escherichia coli strain BL21 (DE3). The recombinant EVP1 or CVP1 protein was overexpressed successfully and effectively purified to homogeneity. Then, we identified that EVP1 and CVP1 protein could generate effectively specific humoral immunity and cellular immunity in mice, what's more, we determined the cross-protection of VP1 between EV71 and CB3 in a murine model. The results showed that immunization with EVP1 could ...
Source: Frontiers in Immunology - Category: Allergy & Immunology Source Type: research
Authors: Bian L, Gao F, Mao Q, Sun S, Wu X, Liu S, Yang X, Liang Z Abstract INTRODUCTION: Hand, foot, and mouth disease (HFMD) is a common viral childhood illness, that has been a severe public health concern worldwide, particularly in the Asia-Pacific region. According to epidemiological data of HFMD during the past decade, the most prevalent causal viruses were enterovirus (EV)-A71, coxsackievirus (CV)-A16, CV-A6 and CV-A10. The public health burden of CV-A10-related diseases has been underestimated as their incidence was lower than that of EV-A71 and CV-A16 in most HFMD outbreaks. However, cases of CV-A10 infect...
Source: Expert Review of Anti-Infective Therapy - Category: Infectious Diseases Tags: Expert Rev Anti Infect Ther Source Type: research
In this study, the immunogenicity of coxsackieviruses A6, A10, and A16 (CA6, CA10, and CA16), which were inactivated by formalin or β-propiolactone (BPL) under different conditions, was evaluated as multivalent vaccine candidates. CA6 induced similar immune responses with both inactivation methods, and the immune efficacy of CA10 and CA16 was better following inactivation with BPL than with formalin. There was no sufficient cross-reactivity or cross-protectivity against heterologous strains in groups vaccinated with the BPL-inactivated (BI) monovalent vaccine. Sufficient neutralizing antibody and cell-mediated immune ...
Source: Vaccine - Category: Allergy & Immunology Authors: Tags: Vaccine Source Type: research
Abstract Hand, foot and mouth disease (HFMD) and herpangina (HA) are common childhood diseases mostly associated with human enteroviruses (EV). Although usually benign illnesses, neurological complications may be observed during large epidemics when enterovirus A71 (EV-A71) is involved, as observed in the Asia Pacific Region and in China since the late 1990s. The occurrence of these complications warrants reinforcing the surveillance of the emergence of EV-A71 infections in France and Europe. Monitoring EV infections associated with HFMD can be considered as an effective tool to detect an upsurge of EV-A71 infecti...
Source: Archives de Pediatrie - Category: Pediatrics Authors: Tags: Arch Pediatr Source Type: research
Abstract Enterovirus-A71 (EV-A71) is an etiological agent of the hand, foot and mouth disease (HFMD). EV-A71 infection produces high fever and ulcers in children. Some EV-A71 strains produce severe infections leading to pulmonary edema and death. Although the protective efficacy of the inactivated vaccine (IV) was ≥90% against mild HFMD, there was approximately 80% protection against severe HFMD. The monovalent EV-A71 IV elicits humoral immunity but lacks long-term immunogenicity. Spontaneous mutations of the EV-A71 genome could lead to antigenicity changes and the virus may not be neutralized by antibodies eli...
Source: Virology - Category: Virology Authors: Tags: Virology Source Type: research
A hand-foot-mouth disease outbreak occurred in 2014 around Guangdong. The purpose of this study was investigating the status and susceptibility of infectious neutralizing antibodies to enterovirus 71 among children so as to provide scientific evidence for the population immunity level of hand-foot-mouth disease and prepare for enterovirus 71 vaccination implementation. Serum specimens were collected from children in communities from January 2014 to March 2015 in Guangzhou. A total of 197 serum samples from children 1 –5 years old were collected for this cross-sectional study via non-probabilistic sampling from the da...
Source: International Journal of Environmental Research and Public Health - Category: Environmental Health Authors: Tags: Article Source Type: research
CONCLUSIONS: Communication between key stakeholders about outbreak confirmation, risk assessment, and surveillance should be improved. Effective communication facilitates timely notification (within 24 hours) of clustered outbreaks to a local Center for Disease Control and Prevention. Timely implementation of a control response is effective in minimising incidence and length of an outbreak in childcare facilities. The government should provide incentives for childcare facilities to train infection control specialists who can serve as the first contact, knowledge, and communication points, as well as facilitate exchange of ...
Source: Hong Kong Medical Journal - Category: Journals (General) Tags: Hong Kong Med J Source Type: research
Authors: Lee KY Abstract Since the outbreak of the enterovirus 71 (EV71) infection in Malaysia in 1997, large epidemics of EV71 have occurred in the Asia-Pacific region. Many children and infants have died from serious neurological complications during these epidemics, and EV71 infection has become a serious public health problem in these areas. EV71 infection causes hand, foot and mouth disease (HFMD) in children, and usually resolves spontaneously. However, EV71 occasionally involves the central nervous system (CNS), and induces diverse neurological complications such as brainstem encephalitis, aseptic meningitis...
Source: Korean Journal of Pediatrics - Category: Pediatrics Tags: Korean J Pediatr Source Type: research
By: Rachael Rettner, Senior Writer Published: 09/16/2016 11:23 AM EDT on LiveScience More than a dozen students at Florida State University (FSU) are sick with hand, foot and mouth disease, an illness that’s usually seen in young children. So why are college-age adults contracting the disease? The viral illness can cause fever, painful mouth sores, and a skin rash on the hands and feet, according to the Centers for Disease Control and Prevention (CDC). It usually affects kids younger than 5 years old. But it’s not surprising to see cases of the disease on a college campus, as it can sometimes affect adults, sai...
Source: Science - The Huffington Post - Category: Science Source Type: news
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