Epidemiological Characteristics of Sapovirus and Human Astrovirus Detected among Children in Nara Prefecture, Japan, during the 2009/2010&amp;ndash;2014/2015 Seasons

Yoneda, Masaki; Nakano, Mamoru; Sugimoto, Daichi; Inada, Machi; Fujitani, Misako; Kitahori, Yoshiteru

doi:10.7883/yoken.jjid.2015.529

Cited by 15 publications

(19 citation statements)

References 21 publications

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“…The percentages of sapoviruses from the last four seasons were in line with other studies conducted in India, the Philippines and South Africa, which showed that the sapovirus represented 2.7–7.7% of acute gastroenteritis in hospitalised children . A six‐year surveillance study conducted in Nara, Japan, showed sapoviruses in 2.1–11.3% of cases of acute gastroenteritis, with GI.1 as the predominant strain . The difference between the pre and post immunisation periods in our study was also affected by the long period of no sapovirus‐positive detections during the first season.…”

Section: Discussionsupporting

confidence: 91%

The role of the sapovirus infection increased in gastroenteritis after national immunisation was introduced

2019

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Aim This study examined the prevalence and clinical significance of the sapovirus infection in children with acute gastroenteritis before and after the introduction of the rotavirus vaccination in Finland in 2009. Methods We collected 1437 stool samples from children under 16 years during three prospective hospital‐based surveillance studies of acute gastroenteritis at Tampere University Hospital, Finland. The children were seen in the emergency department (47%) or admitted to the ward (53%). Sapovirus findings from 2006 to 2008 (n = 759), before national immunisation, were compared to 2009–2011 (n = 330) and 2012–2014 (n = 348), after the national programme was launched. Results The overall incidence of the sapovirus was 3.3%. It was present in 1.4% of acute gastroenteritis cases in 2006–2008 and 5.5% in the post‐vaccination years, but the absolute number did not increase. Sapoviruses mainly occurred in the winter and spring, but did not follow the prevalence of the norovirus or rotavirus. Sapovirus GI.1 and GII.1 were the most common genotypes, but the predominant strain was different each season. Many sapovirus lineages appeared during multiple seasons and reappeared later. Conclusion The sapovirus was uncommonly and sporadically detected in children seen in the hospital for acute gastroenteritis, and its relative role increased after national immunisation was introduced.

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Section: Discussionsupporting

confidence: 91%

The role of the sapovirus infection increased in gastroenteritis after national immunisation was introduced

2019

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“…; Yoneda et al . ). In particular, GI.1, the prevalent genotype detected in our study, has been shown to be the prevalent genotype in patients with acute diarrhoea in different studies (Kumthip et al .…”

Section: Discussionmentioning

confidence: 97%

Molecular characterization of human Sapovirus in untreated sewage in Italy by amplicon-based Sanger and next-generation sequencing

et al. 2018

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Aims: Human Sapoviruses (HSaVs) are etiological agents of sporadic cases and outbreaks of acute gastroenteritis in humans of all ages. Evidence of worldwide distribution of HSaV has been documented; however, little is known about HSaV circulation in Italy. To study their occurrence and genetic diversity a nation-wide environmental surveillance was undertaken. Methods and Results: One hundred and sixty-six raw sewage samples, collected from 16 wastewater treatment plants throughout Italy, were processed and analysed by a RT-nested PCR targeting the capsid region, followed by amplicon sequencing. HSaV was detected in 56 of 166 (33Á7%) samples, characterized as genotypes GI.1 (n = 30 samples), GI.2 (n = 3), GI.3 (n = 2) and GII.

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“…; Yoneda et al . ). The genotypes and viral load concentration detected in wastewater or contaminated sites by the release of untreated sewage, usually demonstrates the flux of the virus in the population and reflects the most prevalent viral infections in the community and the level of water pollution.…”

Section: Discussionmentioning

confidence: 97%

Occurrence of human sapoviruses in wastewater and stool samples in Rio De Janeiro, Brazil

et al. 2016

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Epidemiological Characteristics of Sapovirus and Human Astrovirus Detected among Children in Nara Prefecture, Japan, during the 2009/2010–2014/2015 Seasons

Abstract: SUMMARY:The current study elucidated the epidemiological characteristics of sapovirus (SaV) and human astrovirus (HAstV) associated with gastroenteritis among children in regional populations of Nara Prefecture, Japan, during the

Cited by 15 publications

References 21 publications

The role of the sapovirus infection increased in gastroenteritis after national immunisation was introduced

The role of the sapovirus infection increased in gastroenteritis after national immunisation was introduced

Molecular characterization of human Sapovirus in untreated sewage in Italy by amplicon-based Sanger and next-generation sequencing

Occurrence of human sapoviruses in wastewater and stool samples in Rio De Janeiro, Brazil

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