Enteroviruses are widespread human pathogens characterized by a high level of a genetic diversity. They cause different clinical forms of infection. The aim of the present study was to analyze the molecular epidemiology of enterovirus infection in the application to the structure of its clinical forms in 2016–2017.ECHO viruses predominated among patients with aseptic meningitis and were prevailing group of enteroviruses in 2016 (all ECHO viruses – 58%, including ECHO 9 – 26%, ECHO 6 –14%, ECHO 16 – 10%). In 2017, Coxsackieviruses prevailed (68%), that were including Coxsackievirus B5 (31%), Coxsackievirus B1, Coxsackievirus B4 and Coxsackievirus A6 (9% of each serotype). Coxsackieviruses were detected more frequently in patients with vesicular pharyngitis and unspecified enterovirus infection. The results of the molecular epidemiological analysis indicated that the prevalence of ECHO viruses in 2016 and Coxsackieviruses B in 2017 was due to the emergence of numerous new genovariants of these viruses.
In the article there has been analyzed the current state of the problem of non-polio enteroviral infections (EVIs) in humans in the Republic of Belarus. There are reported clinical and epidemiological features of the development of the epidemic process, there is presented the dynamics of morbidity rate in the past decade, there is described the structure for the recorded in recent years EVIs in the context ofadministrative territories, clinicalforms, age groups, the impact of seasonal factors. The particular attention is given to the characteristic of disease outbreak with a description of its dominant pathogens. There are recommended the best ways of improving the surveillance of this group of infections.
В работе проанализированы данные о частоте обнаружения вирусспецифических антител (АТ) у пациентов с COVID-19, сроках их появления и кинетике сероконверсии. Так, суммарные АТ к коронавирусу SARS-CoV-2 были обнаружены у 55,7 % пациентов, а IgG ‒ у 74,7 % лиц с лабораторно подтвержденной инфекцией COVID-19. Частота их выявления была достоверно выше, чем в других группах обследованных. В течение первых 6 сут кинетика сероконверсии характеризовалась появлением суммарных АТ и IgG у 10,5 и 5,3 % пациентов c COVID-19 соответственно. У большинства заболевших (71,4 %) сероконверсию IgM и IgG регистрировали в период с 7-х по 11-е сутки, а к 22-м суткам суммарные АТ и IgG были обнаружены у 100 % пациентов. Представленные в работе результаты дополняют накопленные в разных странах мира данные, касающиеся формирования гуморального иммунного ответа при COVID-19.
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