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ABSTRACT: Background
While hand, foot and mouth disease (HFMD) is primarily self-resolving-soaring incidence rate of symptomatic HFMD effectuates economic burden in the Asia-Pacific region. Singapore has seen a conspicuous rise in the number of HFMD cases from 2010s. Here, we aims to identify the serology and genotypes responsible for such outbreaks in hospitals and childcare facilities.Methods
We studied symptomatic paediatric HFMD cases from 2013 to 2018 in Singapore. Surveillance for subclinical enterovirus infections was also performed in childcares at the same time period.Results
Genotyping 101 symptomatic HFMD samples revealed CV-A6 as the major etiological agent for recent outbreaks. We detected infections with CV-A6 (41.0%), EV-A71 (7%), CV-A16 (3.0%), coxsackievirus A2, CV-A2 (1.0%) and coxsackievirus A10, CV-A10 (1.0%). Phylogenetic analysis of local CV-A6 strains revealed a high level of heterogeneity compared against others worldwide, dissimilar to other HFMD causative enteroviruses for which the dominant strains and genotypes are highly region specific. We detected sub-clinical enterovirus infections in childcare centres; 17.1% (n = 245) tested positive for enterovirus in saliva, without HFMD indicative symptoms at the point of sample collection.Conclusions
CV-A6 remained as the dominant HFMD causative strain in Singapore. Silent subclinical enteroviral infections were detected and warrant further investigations.
SUBMITTER: Min N
PROVIDER: S-EPMC7901731 | biostudies-literature | 2021 Feb
REPOSITORIES: biostudies-literature
Min Nyo N Ong Yasmin Hui Binn YHB Han Alvin X AX Ho Si Xian SX Yen Emmerie Wong Phaik EWP Ban Kenneth Hon Kim KHK Maurer-Stroh Sebastian S Chong Chia Yin CY Chu Justin Jang Hann JJH
PLoS neglected tropical diseases 20210210 2
<h4>Background</h4>While hand, foot and mouth disease (HFMD) is primarily self-resolving-soaring incidence rate of symptomatic HFMD effectuates economic burden in the Asia-Pacific region. Singapore has seen a conspicuous rise in the number of HFMD cases from 2010s. Here, we aims to identify the serology and genotypes responsible for such outbreaks in hospitals and childcare facilities.<h4>Methods</h4>We studied symptomatic paediatric HFMD cases from 2013 to 2018 in Singapore. Surveillance for su ...[more]