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Stability and infectivity of enteroviruses on dry surfaces:Potential for indirect transmission control

Biosafety and Health 2023年第6期5卷 339-345页

作者： Pichamon Sittikul Pimolpachr Sriburin Jittraporn Rattanamahaphoom warisa nuprasert Nipa Thammasonthijarern Janjira Thaipadungpanit Weerawan Hattasingh Nathamon Kosoltanapiwat Pilaipan Puthavathana Supawat Chatchen Department of Tropical Pediatrics Faculty of Tropical MedicineMahidol UniversityBangkok 10400Thailand Department of Parasitology Faculty of Veterinary MedicineKasetsart UniversityBangkok 10900Thailand Department of Clinical Tropical Medicine Faculty of Tropical MedicineMahidol UniversityBangkok 10400Thailand Mahidol-Oxford Tropical Medicine Research Unit Faculty of Tropical Medicine Mahidol UniversityBangkok 10400Thailand Department of Microbiology and Immunology Faculty of Tropical MedicineMahidol UniversityBangkok 10400Thailand Center for Research and Innovation Faculty of Medical TechnologyMahidol UniversityNakhon Pathom 73170Thailand

Hand,foot,and mouth disease(HFMD)is a contagious disease mainly occurring in young children,and outbreaks commonly occur among young children in the Asia–Pacific region including ***,the World Health Organization(WHO)monitors HFMD in the Western Pacific region to detect outbreaks and other significant events by the Regional Event Based Surveillance *** is mainly caused by a group of enteroviruses(EVs)transmitted through direct contact(person to person)and indirect contact with contaminated objects(surface-to-hand).However,few studies have examined the surface stability of *** this study,we investigated the stability of enterovirus A71(EV-A71)and coxsackievirus A16(CVA16)on three different dry surfaces(wood,plastic,and stainless steel)using the endpoint titration using the 3-(4,5-dimethylthiazol-2-yl)-2,5-diphenyl-2H-tetrazolium bromide(MTT)staining of viable cells and real-time polymerase chain reaction(viral genome detection).The results revealed that virus infectivity dramatically decreased within a few hours on dry ***,viral RNA could be detected on dry surfaces for up to 28 *** heat inactivation,both EV-A71 and CVA16 were inactivated after exposure to 60°C for 15 *** on virus stability on different dry surfaces will provide useful information for HFMD transmission control.

关键词： Enteroviruses EV-A71 Genomic RNA Hand foot and mouth disease MTT assay Stability

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