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Kumazaki M, Usuku S. Influence of herd immunity on norovirus: a long-term field study of repeated viral gastroenteritis outbreaks at the same facilities. BMC Infect Dis 2023; 23:265. [PMID: 37101126 PMCID: PMC10132420 DOI: 10.1186/s12879-023-08251-7] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/09/2022] [Accepted: 04/13/2023] [Indexed: 04/28/2023] Open
Abstract
BACKGROUND Viral acute gastroenteritis (AG) is detected worldwide annually. Outbreaks caused by viruses associated with gastroenteritis have been reported repeatedly at the same facilities in Yokohama, Japan over several years. We investigated the statuses of these repeated outbreaks to consider herd immunity at the facility level. METHODS Between September 2007 and August 2017, 1459 AG outbreaks were reported at 1099 facilities. Stool samples were collected for virological testing, and the norovirus gene was amplified and sequenced to determine the genotype using the N-terminal region of the capsid. RESULTS The outbreaks were caused by norovirus, sapovirus, rotavirus A, and rotavirus C. Norovirus was consistently predominant over the 10-year period. Of 1099 facilities, 227 reported multiple outbreaks, of which norovirus-only combinations accounted for 76.2%. More outbreaks were due to different genotype combinations than the same genotype combinations. For facilities that experienced two norovirus outbreaks, the average interval between outbreaks was longer for groups with the same combinations than for groups with different genogroup or genotype combinations, although no statistically significant differences were observed. At 44 facilities, outbreaks occurred repeatedly during the same AG season, and most exhibited combinations of different norovirus genotypes or viruses. Among 49 combinations with the same norovirus genotype at the same facilities over 10 years, the most prevalent genotypes were combinations of genogroup II genotype 4 (GII.4), followed by GII.2, GII.6, GII.3, GII.14, and GI.3. The mean interval between outbreaks was 31.2 ± 26.8 months for all combinations, and the mean intervals were longer for non-GII.4 genotype cases than for GII.4 cases, and statistically significant differences were observed (t-test, P < 0.05). Additionally, these average intervals were longer for kindergarten/nursery schools and primary schools than for nursing homes for older adults (t-test, P < 0.05). CONCLUSIONS Repeated AG outbreaks at the same facilities in Yokohama during the 10-year study period included mainly norovirus combinations. Herd immunity at the facility level was maintained for at least the same AG season. Norovirus genotype-specific herd immunity was maintained for an average of 31.2 months during the study period, and these intervals differed depending on genotype.
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Affiliation(s)
- Makoto Kumazaki
- Microbiological Testing and Research Division, Yokohama City Institute of Public Health, 2-7-1 Tomiokahigashi, Kanazawa-Ku, Yokohama, Kanagawa, 236-0051, Japan.
| | - Shuzo Usuku
- Microbiological Testing and Research Division, Yokohama City Institute of Public Health, 2-7-1 Tomiokahigashi, Kanazawa-Ku, Yokohama, Kanagawa, 236-0051, Japan
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2
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Umair M, Rehman Z, Haider SA, Usman M, Rana MS, Ikram A, Salman M. First report of coinfection and whole-genome sequencing of norovirus and sapovirus in an acute gastroenteritis patient from Pakistan. J Med Virol 2023; 95:e28458. [PMID: 36597899 DOI: 10.1002/jmv.28458] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/28/2022] [Revised: 12/20/2022] [Accepted: 01/01/2023] [Indexed: 01/05/2023]
Abstract
Acute gastroenteritis is one of the most common diseases in infants and children in developing countries including Pakistan. In Pakistan, rotavirus (RVA) is known to contribute significantly to pediatric diarrheal illness, but the contribution of other viruses is still unclear. In the current study we have identified a case of mixed infection of norovirus (NoV) and sapovirus (SaV) in a 2-year-old child with acute gastroenteritis. The sample was initially processed for the detection of group A RVA through ELISA followed by NoV using RT-PCR assay. The sample tested positive for NoV RNA and was later subjected to whole-genome sequencing using meta-genome approach on Miseq (Illumina) platform. Sequencing results revealed GII.15 genotype of NoV that clustered with viruses from China and USA from 2017 to 2021. We also retrieved the complete genome of SaV (GI.1 genotype) from the same sample and phylogenetic analysis showed clustering with strains reported from Japan, South Korea, US, and Taiwan during 2012-2016. This is the first report from Pakistan that confirms coinfection of NoV and SaV and elucidates their whole genomes. We recommend initiation of NoV and SaV surveillance program to ascertain disease burden and explore genetic diversity, especially as RVA vaccines have been included in national immunization program.
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Affiliation(s)
- Massab Umair
- Department of Virology, National Institute of Health, Islamabad, Pakistan
| | - Zaira Rehman
- Department of Virology, National Institute of Health, Islamabad, Pakistan
| | - Syed Adnan Haider
- Department of Virology, National Institute of Health, Islamabad, Pakistan
| | - Muhammad Usman
- Department of Virology, National Institute of Health, Islamabad, Pakistan
| | | | - Aamer Ikram
- Department of Virology, National Institute of Health, Islamabad, Pakistan
| | - Muhammad Salman
- Department of Virology, National Institute of Health, Islamabad, Pakistan
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3
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Hoque SA, Nishimura K, Thongprachum A, Khamrin P, Thi Kim Pham N, Islam MT, Khandoker N, Okitsu S, Onda-Shimizu Y, Dey SK, Maneekarn N, Kobayashi T, Hayakawa S, Ushijima H. An Increasing Trend of Human Sapovirus Infection in Japan, 2009 to 2019: An Emerging Public Health Concern. J Infect Public Health 2022; 15:315-320. [DOI: 10.1016/j.jiph.2022.01.019] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/24/2021] [Revised: 10/21/2021] [Accepted: 01/27/2022] [Indexed: 11/16/2022] Open
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4
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Molecular Epidemiology of Human Sapovirus Among Children with Acute Gastroenteritis in Western Canada. J Clin Microbiol 2021; 59:e0098621. [PMID: 34288727 DOI: 10.1128/jcm.00986-21] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022] Open
Abstract
Objectives: Sapovirus is increasingly recognized as an important cause of acute gastroenteritis (AGE) worldwide, however studies of prevalence, genetic diversity and strain-specific clinical implications have been scarce. Methods: To fill this knowledge gap, we used reverse transcription real-time PCR and sequencing of the partial major capsid protein VP1 gene to analyze stool specimens and rectal swabs obtained from 3347 children with AGE and 1355 asymptomatic controls (all <18 years old) collected between December 2014 and August 2018 in Alberta, Canada. Results: Sapovirus was identified in 9.5% (317/3347) of the children with AGE and 2.9% of controls. GI.1 (36%) was the predominant genotype identified, followed by GI.2 (18%), GII.5 (8%) and GII.3 (6%). Rare genotypes GII.1, GII.2, GV.1, GII.4, GIV.1, GI.3 and GI.7 were also seen. Sapovirus was detected year-round, peaking during the winter months of November to January. The exception was the 2016-2017 season when GI.2 overtook GI.1 as the predominant strain with a high detection rate persisting into April. We did not observe significant difference in the severity of gastroenteritis by genogroup or genotype. Repeated infection by sapovirus of different genogroups occurred in three controls who developed AGE later. Conclusions: Our data suggests that sapovirus is a common cause of AGE in children with high genetic diversity.
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5
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Rahman R, Rahman S, Afrad MMH, Talha M, Islam D, Uddin KMM, Ahmed S, Afrad MH, Faruque ASG, Hossian ME, Rahman M. Epidemiology and genetic characterization of human sapovirus among hospitalized acute diarrhea patients in Bangladesh, 2012-2015. J Med Virol 2021; 93:6220-6228. [PMID: 34081341 DOI: 10.1002/jmv.27125] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/31/2021] [Accepted: 06/01/2021] [Indexed: 11/09/2022]
Abstract
Human sapovirus, which causes acute gastroenteritis, is not well studied and poorly understood. This study aims to investigate the contribution of sapovirus in diarrhea, their clinical association, and genotypic diversity. Fecal specimens (n = 871) were randomly selected from diarrheal patients who attended International Centre for Diarrhoeal Disease Research, Bangladesh hospital in Dhaka, Bangladesh during January 2012-December 2015 and tested for the presence of sapovirus RNA using real-time polymerase chain reaction. Sapovirus RNA was identified in 2.3% (n = 20) of the samples. Seventy-five percent of the sapovirus positive cases were coinfected with other pathogens, such as rotavirus, norovirus, enterotoxigenic Escherichia coli, adenovirus, Shigella spp., and Vibrio cholerae. A vast genetic diversity was observed among sapovirus with at least seven common genotypes (GI.1, GI.2, GI.7, GII.1, GII.4, GII.6, and GIV), and a new genotype GII.NA1. Some of the GI.1 strains detected were similar to GI.4 in the polymerase region sequence and were confirmed as recombinant strains. Our findings suggest that the overall contribution of sapovirus in hospitalized diarrheal illness is low but highlight enormous genetic diversity.
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Affiliation(s)
- Rajibur Rahman
- Virology Laboratory, Infectious Diseases Division (IDD), International Centre for Diarrhoeal Disease Research (ICDDR), Bangladesh, Dhaka, Bangladesh
| | - Sezanur Rahman
- Virology Laboratory, Infectious Diseases Division (IDD), International Centre for Diarrhoeal Disease Research (ICDDR), Bangladesh, Dhaka, Bangladesh
| | - Md M H Afrad
- Virology Laboratory, Infectious Diseases Division (IDD), International Centre for Diarrhoeal Disease Research (ICDDR), Bangladesh, Dhaka, Bangladesh
| | - Muhammad Talha
- Virology Laboratory, Infectious Diseases Division (IDD), International Centre for Diarrhoeal Disease Research (ICDDR), Bangladesh, Dhaka, Bangladesh
| | - Deen Islam
- Virology Laboratory, Infectious Diseases Division (IDD), International Centre for Diarrhoeal Disease Research (ICDDR), Bangladesh, Dhaka, Bangladesh
| | - K M Main Uddin
- Virology Laboratory, Infectious Diseases Division (IDD), International Centre for Diarrhoeal Disease Research (ICDDR), Bangladesh, Dhaka, Bangladesh
| | - Shahnawaz Ahmed
- Nutrition and Clinical Services Division (NCSD), International Centre for Diarrhoeal Disease Research (ICDDR), Bangladesh, Dhaka, Bangladesh
| | - Mokibul H Afrad
- Virology Laboratory, Infectious Diseases Division (IDD), International Centre for Diarrhoeal Disease Research (ICDDR), Bangladesh, Dhaka, Bangladesh
| | - Abu S G Faruque
- Nutrition and Clinical Services Division (NCSD), International Centre for Diarrhoeal Disease Research (ICDDR), Bangladesh, Dhaka, Bangladesh
| | - Mohammad E Hossian
- Virology Laboratory, Infectious Diseases Division (IDD), International Centre for Diarrhoeal Disease Research (ICDDR), Bangladesh, Dhaka, Bangladesh
| | - Mustafizur Rahman
- Virology Laboratory, Infectious Diseases Division (IDD), International Centre for Diarrhoeal Disease Research (ICDDR), Bangladesh, Dhaka, Bangladesh
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6
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Song K, Lin X, Liu Y, Ji F, Zhang L, Chen P, Zhao C, Song Y, Tao Z, Xu A. Detection of Human Sapoviruses in Sewage in China by Next Generation Sequencing. FOOD AND ENVIRONMENTAL VIROLOGY 2021; 13:270-280. [PMID: 33755873 PMCID: PMC7985922 DOI: 10.1007/s12560-021-09469-x] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 11/28/2020] [Accepted: 02/25/2021] [Indexed: 06/12/2023]
Abstract
Human sapovirus (SaV) is an important causative agent of nonbacterial gastroenteritis in humans. However, little is known about its circulation in China. To study the prevalence and diversity of human SaV genotypes circulating in eastern China, a 3-year environmental surveillance combined with next generation sequencing (NGS) technology was conducted. A total of 36 raw sewage samples were collected from January 2017 to December 2019 in Jinan and processed. Thirty-five (97.22%) samples were positive for human SaV genome in quantitative RT-PCR assay; 33 (91.67%) samples were positive in nested RT-PCR assay on partial capsid VP1 sequence and all amplicons were further analyzed separately by NGS. Among those, ten genotypes belonging to the genogroups of GI, GII, GIV, and GV were identified by NGS, including 4 major genotypes (GI.2, GI.1, GV.1 and GI.3) and 6 uncommon genotypes (GII.5, GII.1, GII.NA1, GII.3, GI.6 and GIV.1). A temporal switch of predominant genotype was observed from GI.2 to GI.1 around June 2019. Local and foreign sequences clustered together in some branches according to phylogenetic analysis, indicating frequent transmission of various lineages in different regions of the world. Environmental surveillance provides a comprehensive picture of human SaV in China. NGS-based environmental surveillance improves our knowledge on human SaV circulating in communities greatly and should be encouraged as a sensitive surveillance tool.
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Affiliation(s)
- Ke Song
- Department of Microbiology, School of Public Health, Cheeloo College of Medicine, Shandong University, No. 44 Wenhuaxi Road, Jinan, 250012, People's Republic of China
| | - Xiaojuan Lin
- Shandong Provincial Key Laboratory of Infectious Disease Control and Prevention, Shandong Center for Disease Control and Prevention, No. 16992 Jingshi Road, Jinan, 250014, People's Republic of China
| | - Yao Liu
- Shandong Provincial Key Laboratory of Infectious Disease Control and Prevention, Shandong Center for Disease Control and Prevention, No. 16992 Jingshi Road, Jinan, 250014, People's Republic of China
| | - Feng Ji
- Shandong Provincial Key Laboratory of Infectious Disease Control and Prevention, Shandong Center for Disease Control and Prevention, No. 16992 Jingshi Road, Jinan, 250014, People's Republic of China
| | - Li Zhang
- Shandong Provincial Key Laboratory of Infectious Disease Control and Prevention, Shandong Center for Disease Control and Prevention, No. 16992 Jingshi Road, Jinan, 250014, People's Republic of China
| | - Peng Chen
- School and Hospital of Stomatology, Cheeloo College of Medicine, Shandong University, 44-1 Wenhuaxi Road, Jinan, 250012, People's Republic of China
| | - Chenxu Zhao
- Department of Epidemiology, School of Public Health, Cheeloo College of Medicine, Shandong University, No. 44 Wenhuaxi Road, Jinan, 250012, People's Republic of China
| | - Yanyan Song
- Department of Microbiology, School of Public Health, Cheeloo College of Medicine, Shandong University, No. 44 Wenhuaxi Road, Jinan, 250012, People's Republic of China.
| | - Zexin Tao
- Shandong Provincial Key Laboratory of Infectious Disease Control and Prevention, Shandong Center for Disease Control and Prevention, No. 16992 Jingshi Road, Jinan, 250014, People's Republic of China.
| | - Aiqiang Xu
- Shandong Provincial Key Laboratory of Infectious Disease Control and Prevention, Shandong Center for Disease Control and Prevention, No. 16992 Jingshi Road, Jinan, 250014, People's Republic of China
- Department of Epidemiology, School of Public Health, Cheeloo College of Medicine, Shandong University, No. 44 Wenhuaxi Road, Jinan, 250012, People's Republic of China
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7
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Okitsu S, Khamrin P, Thongprachum A, Hikita T, Kumthip K, Pham NTK, Takanashi S, Hayakawa S, Maneekarn N, Ushijima H. Diversity of human sapovirus genotypes detected in Japanese pediatric patients with acute gastroenteritis, 2014-2017. J Med Virol 2021; 93:4865-4874. [PMID: 33704833 DOI: 10.1002/jmv.26934] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/21/2020] [Revised: 02/27/2021] [Accepted: 03/02/2021] [Indexed: 11/09/2022]
Abstract
Sapovirus (SaV) is one of the pathogens related to acute gastroenteritis (AGE) in adults and children worldwide. This study reported the diversity of SaV genotypes in children with AGE in Japan from July 2014 to June 2017. Of a total of 2259 stool samples tested by using reverse transcription-PCR method and further analyzed by nucleotide sequencing, 114 (5.0%) were positive for SaV and GI.1 (83.3%) was the most predominant genotype, followed by GII.1, GIV.1, GI.2, GI.3, and GII.3 genotypes. Monthly distribution analysis demonstrated two epidemic peaks from July to December 2015 and February to May 2017. However, no detection peak was observed in 2014 and 2016. Phylogenetic analysis of the complete VP1 nucleotide sequences of these GI.1 strains revealed two major clusters of GI.1 and each of which contained GI.1 strains of both 2015 and 2017. This study suggests that the continuous surveillance of SaV is needed to monitor high genetic diversity in Japanese children with AGE.
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Affiliation(s)
- Shoko Okitsu
- Division of Microbiology, Department of Pathology and Microbiology, Nihon University School of Medicine, Tokyo, Japan
| | - Pattara Khamrin
- Division of Microbiology, Department of Pathology and Microbiology, Nihon University School of Medicine, Tokyo, Japan.,Department of Microbiology, Faculty of Medicine, Chiang Mai University, Chiang Mai, Thailand.,Center of Excellence in Emerging and Re-emerging Diarrheal Viruses, Chiang Mai University, Chiang Mai, Thailand
| | | | | | - Kattareeya Kumthip
- Department of Microbiology, Faculty of Medicine, Chiang Mai University, Chiang Mai, Thailand.,Center of Excellence in Emerging and Re-emerging Diarrheal Viruses, Chiang Mai University, Chiang Mai, Thailand
| | - Ngan Thi Kim Pham
- Division of Microbiology, Department of Pathology and Microbiology, Nihon University School of Medicine, Tokyo, Japan
| | - Sayaka Takanashi
- Infectious Disease Surveillance Center, National Institute of Infectious Diseases, Tokyo, Japan
| | - Satoshi Hayakawa
- Division of Microbiology, Department of Pathology and Microbiology, Nihon University School of Medicine, Tokyo, Japan
| | - Niwat Maneekarn
- Department of Microbiology, Faculty of Medicine, Chiang Mai University, Chiang Mai, Thailand.,Center of Excellence in Emerging and Re-emerging Diarrheal Viruses, Chiang Mai University, Chiang Mai, Thailand
| | - Hiroshi Ushijima
- Division of Microbiology, Department of Pathology and Microbiology, Nihon University School of Medicine, Tokyo, Japan
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8
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Oka T, Yamamoto SP, Iritani N, Sato S, Tatsumi C, Mita T, Yahiro S, Shibata S, Wu FT, Takagi H. Polymerase chain reaction primer sets for the detection of genetically diverse human sapoviruses. Arch Virol 2020; 165:2335-2340. [PMID: 32719956 PMCID: PMC7383071 DOI: 10.1007/s00705-020-04746-9] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/02/2020] [Accepted: 06/22/2020] [Indexed: 11/29/2022]
Abstract
Sapoviruses are increasingly being recognized as pathogens associated with gastroenteritis in humans. Human sapoviruses are currently assigned to 18 genotypes (GI.1-7, GII.1-8, GIV.1, and GV.1-2) based on the sequence of the region encoding the major structural protein. In this study, we evaluated 11 polymerase chain reaction (PCR) assays using published and newly designed/modified primers and showed that four PCR assays with different primer combinations amplified all of the tested human sapovirus genotypes using either synthetic DNA or cDNA prepared from human sapovirus-positive fecal specimens. These assays can be used as improved broadly reactive screening tests or as tools for molecular characterization of human sapoviruses.
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Affiliation(s)
- Tomoichiro Oka
- Department of Virology II, National Institute of Infectious Diseases, Gakuen 4-7-1, Musashimurayama-shi, Tokyo, 208-0011, Japan.
| | - Seiji P Yamamoto
- Division of Microbiology, Osaka Institute of Public Health, Osaka, Japan
| | - Nobuhiro Iritani
- Division of Microbiology, Osaka Institute of Public Health, Osaka, Japan
| | - Shigenori Sato
- Division of Virology and Medical Zoology, Chiba Prefectural Institute of Public Health, Chiba, Japan
| | - Chika Tatsumi
- Division of Virology, Shimane Prefectural Institute of Public Health and Environmental Science, Shimane, Japan
| | - Tetsuo Mita
- Division of Virology, Shimane Prefectural Institute of Public Health and Environmental Science, Shimane, Japan
| | - Shunsuke Yahiro
- Department of Microbiology, Kumamoto Prefectural Institute of Public Health and Environmental Science, Kumamoto, Japan
| | - Shinichiro Shibata
- Microbiology Department, Nagoya City Public Health Research Institute, Aichi, Japan
| | - Fang-Tzy Wu
- Center for Research, Diagnostics and Vaccine Development, Taiwan Centers for Disease Control, Taipei, Taiwan
| | - Hirotaka Takagi
- Management Department of Biosafety and Laboratory Animal, National Institute of Infectious Diseases, Tokyo, Japan
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9
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Sánchez GJ, Mayta H, Pajuelo MJ, Neira K, Xiaofang L, Cabrera L, Ballard SB, Crabtree JE, Kelleher D, Cama V, Bern C, Oshitani H, Gilman RH, Saito M. Epidemiology of Sapovirus Infections in a Birth Cohort in Peru. Clin Infect Dis 2019; 66:1858-1863. [PMID: 29309577 PMCID: PMC5982808 DOI: 10.1093/cid/cix1103] [Citation(s) in RCA: 36] [Impact Index Per Article: 7.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/12/2017] [Accepted: 12/21/2017] [Indexed: 01/08/2023] Open
Abstract
Background Sapovirus is one of the primary viral causes of acute gastroenteritis (AGE), especially where rotavirus vaccination has been implemented. The characteristics and impact of natural infection at the community level, however, have not been well documented. Methods Stool samples were analyzed from 100 children randomly selected from a community-based birth cohort study in Peru. All diarrheal and 1 nondiarrheal stools collected trimonthly from children up to age 2 years (n = 1669) were tested for sapovirus detection. Viral shedding duration was determined by testing additional weekly samples (n = 440) collected before and after a sapovirus-positive sample. Results The incidence of sapovirus infection in the first and second years of life was 4.3 and 11.1 per 100 child-months, respectively. By age 2 years, 82% of children had at least 1 sapovirus infection, and 64% had at least 1 sapovirus-associated diarrhea episode. The median shedding period was 18.5 days. In 112 of 175 infections, 14 genotypes from 4 genogroups (GI, GII, GIV, and GV) were determined. Among genogroups, GI were more frequently found in symptomatic infections than in asymptomatic infections (odds ratio, 3.1; 95% confidence interval, 1.3–7.4). Fifty-nine children had serial sapovirus infections, but only 3 had repeated infection of the same genotype. Conclusions Sapovirus was frequently detected in children with AGE at the community level during the first 2 years of life. Serial sapovirus infections by multiple genotypes in a child suggest genotype-specific immunity from each infection, which needs to be taken into account for vaccine development.
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Affiliation(s)
- Gerardo J Sánchez
- Infectious Diseases Research Laboratory, Department of Cellular and Molecular Sciences, Universidad Peruana Cayetano Heredia, Lima, Peru
| | - Holger Mayta
- Infectious Diseases Research Laboratory, Department of Cellular and Molecular Sciences, Universidad Peruana Cayetano Heredia, Lima, Peru.,Department of International Health, Johns Hopkins University Bloomberg School of Public Health, Baltimore, Maryland.,Asociación Benéfica PRISMA, Lima, Perú
| | - Monica J Pajuelo
- Infectious Diseases Research Laboratory, Department of Cellular and Molecular Sciences, Universidad Peruana Cayetano Heredia, Lima, Peru.,Department of International Health, Johns Hopkins University Bloomberg School of Public Health, Baltimore, Maryland
| | - Karen Neira
- Infectious Diseases Research Laboratory, Department of Cellular and Molecular Sciences, Universidad Peruana Cayetano Heredia, Lima, Peru
| | - Liu Xiaofang
- Department of Virology, Tohoku University Graduate School of Medicine, Sendai, Japan
| | | | - Sarah Blythe Ballard
- Department of International Health, Johns Hopkins University Bloomberg School of Public Health, Baltimore, Maryland
| | - Jean E Crabtree
- Leeds Institute of Biomedical and Clinical Sciences, University of Leeds, United Kingdom
| | - Dermot Kelleher
- Department of Clinical Medicine, Trinity College, Dublin, Ireland
| | - Vitaliano Cama
- Division of Parasitic Diseases and Malaria, Center for Global Health, Centers for Disease Control and Prevention, Atlanta, Georgia
| | - Caryn Bern
- Department of Epidemiology and Biostatistics, University of California-San Francisco
| | - Hitoshi Oshitani
- Department of Virology, Tohoku University Graduate School of Medicine, Sendai, Japan
| | - Robert H Gilman
- Infectious Diseases Research Laboratory, Department of Cellular and Molecular Sciences, Universidad Peruana Cayetano Heredia, Lima, Peru.,Department of International Health, Johns Hopkins University Bloomberg School of Public Health, Baltimore, Maryland.,Asociación Benéfica PRISMA, Lima, Perú
| | - Mayuko Saito
- Department of Virology, Tohoku University Graduate School of Medicine, Sendai, Japan
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10
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Mann P, Pietsch C, Liebert UG. Genetic Diversity of Sapoviruses among Inpatients in Germany, 2008-2018. Viruses 2019; 11:v11080726. [PMID: 31394867 PMCID: PMC6723979 DOI: 10.3390/v11080726] [Citation(s) in RCA: 17] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/04/2019] [Revised: 07/28/2019] [Accepted: 08/07/2019] [Indexed: 12/13/2022] Open
Abstract
Sapovirus enteric disease affects people of all ages across the globe, in both sporadic cases and outbreak settings. Sapovirus is seldom assessed in Germany and its epidemiology in the country is essentially unknown. Thus, sapovirus occurrence and genetic diversity were studied by real-time reverse transcription polymerase chain reaction (RT-PCR) and partial sequencing of major viral structural protein (VP1) gene in two different sets of stool samples: (1) a selection of 342 diarrheal stools collected from inpatient children during 2008−2009, and (2) 5555 stool samples collected during 2010–2018 from inpatients of all age groups with gastrointestinal complaints. Results showed year-round circulation of sapoviruses, with peaks during cooler months. In total, 30 samples (8.8%) of the first and 112 samples of the second set of samples (2.0%) were sapovirus positive. Capsid gene sequencing was successful in 134/142 samples (94.4%) and showed circulation of all known human pathogenic genogroups. Genotype GI.1 predominated (31.8%), followed by GII.1 (16.7%), GII.3 (14.5%), GI.2 (13.8%) and GV.1 (12.3%). Additionally, minor circulation of GI.3, GI.6, GII.2, GII.4, GII.6 and GIV.1 was shown. Consequently, sapovirus diagnostics need broadly reactive RT-PCR protocols and should particularly be considered in infants and young children. Further studies from other sampling sites are essential to extend our knowledge on sapovirus epidemiology in Germany.
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Affiliation(s)
- Pia Mann
- Institute of Virology, Leipzig University, 04103 Leipzig, Germany
| | - Corinna Pietsch
- Institute of Virology, Leipzig University, 04103 Leipzig, Germany.
| | - Uwe G Liebert
- Institute of Virology, Leipzig University, 04103 Leipzig, Germany
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11
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Pietsch C, Liebert UG. Intrahost viral evolution during chronic sapovirus infections. J Clin Virol 2019; 113:1-7. [DOI: 10.1016/j.jcv.2019.02.001] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/05/2018] [Revised: 12/22/2018] [Accepted: 02/04/2019] [Indexed: 12/27/2022]
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12
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Human Sapovirus among Outpatients with Acute Gastroenteritis in Spain: A One-Year Study. Viruses 2019; 11:v11020144. [PMID: 30744057 PMCID: PMC6409837 DOI: 10.3390/v11020144] [Citation(s) in RCA: 30] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/17/2019] [Revised: 02/06/2019] [Accepted: 02/07/2019] [Indexed: 02/06/2023] Open
Abstract
Viral agents of human gastroenteritis affect people of all ages across the globe. As a mainly self-limiting disease, it is difficult to evaluate the real prevalence of etiological agents circulating in each region. Many of the analyzed outbreaks are caused by viruses of the family Caliciviridae, especially the genus Norovirus (NoV). Most studies have focused on other enteric viruses, leaving sapovirus (SaV) underestimated as an important emerging human threat. This one-year study analyzed clinical samples from hospital outpatients with acute gastroenteritis in Spain, with the aim of revealing the importance of human SaV as an emerging viral pathogen. A total of 2667 stools were tested using reverse transcription (RT)-qPCR to detect and quantify SaV. Sapovirus was detected in all age groups, especially in infants, children, and the elderly. The prevalence was 15.64% (417/2667), and was slightly higher in 0–2- and 3–5-year-olds (19.53% and 17.95%, respectively) and much lower in 13–18-year-olds (9.86%). Positive samples were detected throughout the year, with peaks of detection during autumn and the late winter to early spring months. The mean value for the quantified samples was 6.5 × 105 genome copies per gram of stool (GC/g) (range 2.4 × 103–6.6 × 1011 GC/g). RT-nested PCR and sequencing were used for further genotyping. Genetic characterization showed a predominance of genogroup I (GI), followed by GII and GIV. The detection of multiple genotypes suggests the circulation of different strains without any clear tendency. The results obtained suggest SaV as the second major gastroenteritis agent after NoV in the region.
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Diez-Valcarce M, Castro CJ, Marine RL, Halasa N, Mayta H, Saito M, Tsaknaridis L, Pan CY, Bucardo F, Becker-Dreps S, Lopez MR, Magaña LC, Ng TFF, Vinjé J. Genetic diversity of human sapovirus across the Americas. J Clin Virol 2018; 104:65-72. [PMID: 29753103 DOI: 10.1016/j.jcv.2018.05.003] [Citation(s) in RCA: 36] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/15/2018] [Revised: 04/24/2018] [Accepted: 05/04/2018] [Indexed: 12/20/2022]
Abstract
BACKGROUND Sapoviruses are responsible for sporadic and epidemic acute gastroenteritis worldwide. Sapovirus typing protocols have a success rate as low as 43% and relatively few complete sapovirus genome sequences are available to improve current typing protocols. OBJECTIVE/STUDY DESIGN To increase the number of complete sapovirus genomes to better understand the molecular epidemiology of human sapovirus and to improve the success rate of current sapovirus typing methods, we used deep metagenomics shotgun sequencing to obtain the complete genomes of 68 sapovirus samples from four different countries across the Americas (Guatemala, Nicaragua, Peru and the US). RESULTS VP1 genotyping showed that all sapovirus sequences could be grouped in the four established genogroups (GI (n = 13), GII (n = 30), GIV (n = 23), GV (n = 2)) that infect humans. They include the near-complete genome of a GI.6 virus and a recently reported novel GII.8 virus. Sequences of the complete RNA-dependent RNA polymerase gene could be grouped into three major genetic clusters or polymerase (P) types (GI.P, GII.P and GV.P) with all GIV viruses harboring a GII polymerase. One (GII.P-GII.4) of the new 68 sequences was a recombinant virus with the hotspot between the NS7 and VP1 regions. CONCLUSIONS Analyses of this expanded database of near-complete sapovirus sequences showed several mismatches in the genotyping primers, suggesting opportunities to revisit and update current sapovirus typing methods.
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Affiliation(s)
| | | | - Rachel L Marine
- Division of Viral Diseases, Centers for Disease Control and Prevention, Atlanta, GA, USA
| | | | - Holger Mayta
- Department of Cellular and Molecular Sciences, Facultad de Ciencias y Filosofía, Universidad Peruana Cayetano Heredia, Lima, Peru
| | - Mayuko Saito
- Department of Cellular and Molecular Sciences, Facultad de Ciencias y Filosofía, Universidad Peruana Cayetano Heredia, Lima, Peru; Department of Virology, Tohoku University, Graduate School of Medicine, Sendai, Japan
| | | | - Chao-Yang Pan
- California Department of Public Health, Richmond, CA, USA
| | - Filemon Bucardo
- Department of Microbiology, University of Leon, Leon, Nicaragua
| | - Sylvia Becker-Dreps
- Department of Family Medicine and Epidemiology, University of North Carolina, Chapel Hill, NC, USA
| | | | | | - Terry Fei Fan Ng
- Division of Viral Diseases, Centers for Disease Control and Prevention, Atlanta, GA, USA
| | - Jan Vinjé
- Division of Viral Diseases, Centers for Disease Control and Prevention, Atlanta, GA, USA.
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Kitajima M, Rachmadi AT, Iker BC, Haramoto E, Gerba CP. Temporal variations in genotype distribution of human sapoviruses and Aichi virus 1 in wastewater in Southern Arizona, United States. J Appl Microbiol 2018; 124:1324-1332. [PMID: 29377502 DOI: 10.1111/jam.13712] [Citation(s) in RCA: 24] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/27/2017] [Revised: 01/23/2018] [Accepted: 01/23/2018] [Indexed: 01/21/2023]
Abstract
AIMS To investigate the molecular epidemiology, especially temporal variations in genotype distribution, of sapoviruses and Aichi virus 1 (AiV-1) in Arizona, United States, by examining wastewater. METHODS AND RESULTS A total of 26 wastewater samples (13 influent and 13 effluent) were collected monthly from a wastewater treatment plant and viral strains were identified through nested reverse transcription-PCR followed by cloning and sequencing analysis. Identified sapovirus strains were classified into seven genotypes belonging to three genogroups (GI, GII, and GV): GI.1, GI.2, GI.3, GII.1, GII.2, GII.8 and GV.1, with a clear temporal shift. The majority of AiV-1 strains identified from the wastewater samples were classified into genotype B, and genotype A strains were identified in only two samples. CONCLUSIONS We identified a number of sapovirus and AiV-1 strains belonging to multiple genotypes in wastewater samples collected over a 13-month period. Our results suggested a temporal shift in prevalent genotypes in the community. SIGNIFICANCE AND IMPACT OF THE STUDY This is the first study elucidating the genotype distribution of human sapoviruses and AiV-1 in wastewater in the United States. Wastewater surveillance is especially useful for understanding molecular epidemiology of viruses that are less commonly tested in clinical diagnosis, including sapoviruses and AiV-1.
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Affiliation(s)
- M Kitajima
- Division of Environmental Engineering, Faculty of Engineering, Hokkaido University, Sapporo, Hokkaido, Japan
| | - A T Rachmadi
- Division of Environmental Engineering, Faculty of Engineering, Hokkaido University, Sapporo, Hokkaido, Japan
| | - B C Iker
- Department of Soil, Water and Environmental Science, The University of Arizona, Tucson, AZ, USA
| | - E Haramoto
- Interdisciplinary Center for River Basin Environment, University of Yamanashi, Kofu, Yamanashi, Japan
| | - C P Gerba
- Department of Soil, Water and Environmental Science, The University of Arizona, Tucson, AZ, USA
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Yoneda M, Nakano M, Sugimoto D, Inada M, Fujitani M, Kitahori Y. Epidemiological Characteristics of Sapovirus and Human Astrovirus Detected among Children in Nara Prefecture, Japan, during the 2009/2010–2014/2015 Seasons. Jpn J Infect Dis 2017; 70:87-91. [DOI: 10.7883/yoken.jjid.2015.529] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
Affiliation(s)
- Masaki Yoneda
- Virology and Epidemiology Division, Nara Prefecture Institute of Health
| | - Mamoru Nakano
- Virology and Epidemiology Division, Nara Prefecture Institute of Health
| | - Daichi Sugimoto
- Virology and Epidemiology Division, Nara Prefecture Institute of Health
| | - Machi Inada
- Virology and Epidemiology Division, Nara Prefecture Institute of Health
| | - Misako Fujitani
- Virology and Epidemiology Division, Nara Prefecture Institute of Health
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Olarte-Castillo XA, Hofer H, Goller KV, Martella V, Moehlman PD, East ML. Divergent Sapovirus Strains and Infection Prevalence in Wild Carnivores in the Serengeti Ecosystem: A Long-Term Study. PLoS One 2016; 11:e0163548. [PMID: 27661997 PMCID: PMC5035092 DOI: 10.1371/journal.pone.0163548] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/27/2016] [Accepted: 09/10/2016] [Indexed: 01/23/2023] Open
Abstract
The genus Sapovirus, in the family Caliciviridae, includes enteric viruses of humans and domestic animals. Information on sapovirus infection of wildlife is limited and is currently lacking for any free-ranging wildlife species in Africa. By screening a large number of predominantly fecal samples (n = 631) obtained from five carnivore species in the Serengeti ecosystem, East Africa, sapovirus RNA was detected in the spotted hyena (Crocuta crocuta, family Hyaenidae), African lion (Panthera leo, family Felidae), and bat-eared fox (Otocyon megalotis, family Canidae), but not in golden or silver-backed jackals (Canis aureus and C. mesomelas, respectively, family Canidae). A phylogenetic analysis based on partial RNA-dependent RNA polymerase (RdRp) gene sequences placed the sapovirus strains from African carnivores in a monophyletic group. Within this monophyletic group, sapovirus strains from spotted hyenas formed one independent sub-group, and those from bat-eared fox and African lion a second sub-group. The percentage nucleotide similarity between sapoviruses from African carnivores and those from other species was low (< 70.4%). Long-term monitoring of sapovirus in a population of individually known spotted hyenas from 2001 to 2012 revealed: i) a relatively high overall infection prevalence (34.8%); ii) the circulation of several genetically diverse variants; iii) large fluctuations in infection prevalence across years, indicative of outbreaks; iv) no significant difference in the likelihood of infection between animals in different age categories. The likelihood of sapovirus infection decreased with increasing hyena group size, suggesting an encounter reduction effect, but was independent of socially mediated ano-genital contact, or the extent of the area over which an individual roamed.
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Affiliation(s)
- Ximena A. Olarte-Castillo
- Leibniz Institute for Zoo and Wildlife Research, Alfred-Kowalke-Strasse 17, D-10315, Berlin, Germany
| | - Heribert Hofer
- Leibniz Institute for Zoo and Wildlife Research, Alfred-Kowalke-Strasse 17, D-10315, Berlin, Germany
| | - Katja V. Goller
- Leibniz Institute for Zoo and Wildlife Research, Alfred-Kowalke-Strasse 17, D-10315, Berlin, Germany
| | - Vito Martella
- Department of Veterinary Medicine, University of Aldo Moro of Bari, S.p. per Casamassima km 3, 70010 Valenzano, Bari, Italy
| | | | - Marion L. East
- Leibniz Institute for Zoo and Wildlife Research, Alfred-Kowalke-Strasse 17, D-10315, Berlin, Germany
- * E-mail:
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Epidemiological profile and genetic diversity of sapoviruses (SaVs) identified in children suffering from acute gastroenteritis in Pune, Maharashtra, Western India, 2007–2011. Epidemiol Infect 2016; 145:106-114. [DOI: 10.1017/s0950268816001953] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/08/2023] Open
Abstract
SUMMARYSapoviruses (SaVs) are responsible for sporadic cases and outbreaks of acute gastroenteritis. Despite this, few studies in India have focused on the epidemiological investigation of SaV in cases of acute gastroenteritis. The aim of this study was to understand the molecular epidemiology, genetic diversity and clinical impact of SaV in diarrhoeic children from Pune, Western India. Between 2007 and 2011, a total of 985 faecal samples from diarrhoeic cases and non-diarrhoeic controls were collected and examined for the presence of SaV by nested RT–PCR. SaV was detected in 2·7% (21/778) of the cases and 1·9% (4/207) of the controls. We observed that the majority of SaV mono-infections caused severe gastroenteritis (67%) with clinical manifestations of diarrhoea (100%), vomiting (73%) and dehydration (80%). All known human SaV genogroups were detected in the study. At least eight genotypes were identified from cases and controls. Genogroups GIV and GV, along with genotypes GI.5, GII.4 and GII.6, were discovered for the first time in India. Two GII.4 study strains were found to be 98·5–99% identical, having a novel intra-genogroup recombinant (GII.1/GII.4) recently reported from the Philippines, suggesting probable evidence of recombination. The circulation pattern of SaV genotypes varied during the study period, with GII.1 being predominant in 2007 and 2009, GIV.1 in 2008, and GV.1 in 2011.
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Etiological Role and Repeated Infections of Sapovirus among Children Aged Less than 2 Years in a Cohort Study in a Peri-urban Community of Peru. J Clin Microbiol 2016; 54:1598-1604. [PMID: 27076657 DOI: 10.1128/jcm.03133-15] [Citation(s) in RCA: 42] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/04/2015] [Accepted: 03/14/2016] [Indexed: 12/27/2022] Open
Abstract
Human sapovirus has been shown to be one of the most important etiologies in pediatric patients with acute diarrhea. However, very limited data are available about the causative roles and epidemiology of sapovirus in community settings. A nested matched case-control study within a birth cohort study of acute diarrhea in a peri-urban community in Peru from 2007 to 2010 was conducted to investigate the attributable fraction (AF) and genetic diversity of sapovirus. By quantitative reverse transcription-real-time PCR (qPCR) sapovirus was detected in 12.4% (37/299) of diarrheal and 5.7% (17/300) of nondiarrheal stools (P = 0.004). The sapovirus AF (7.1%) was higher in the second year (13.2%) than in the first year (1.4%) of life of children. Ten known genotypes and one novel cluster (n = 5) within four genogroups (GI, GII, GIV, and GV) were identified by phylogenetic analysis of a partial VP1 gene. Further sequence analysis of the full VP1 gene revealed a possible novel genotype, tentatively named GII.8. Notably, symptomatic reinfections with different genotypes within the same (n = 3) or different (n = 5) genogroups were observed in eight children. Sapovirus exhibited a high attributable burden for acute gastroenteritis, especially in the second year of life, of children in a Peruvian community. Further large-scale studies are needed to understand better the global burden, genetic diversity, and repeated infections of sapovirus.
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Murray TY, Nadan S, Page NA, Taylor MB. Diverse sapovirus genotypes identified in children hospitalised with gastroenteritis in selected regions of South Africa. J Clin Virol 2016; 76:24-9. [PMID: 26803285 DOI: 10.1016/j.jcv.2016.01.003] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/01/2015] [Revised: 12/15/2015] [Accepted: 01/05/2016] [Indexed: 12/15/2022]
Abstract
BACKGROUND Sapoviruses (SaVs) are recognised as causative agents of gastroenteritis worldwide. However, data on the genetic diversity of this virus in Africa are lacking, particularly in the form of current long-term studies. OBJECTIVE To determine the genetic diversity of SaVs in children hospitalised with gastroenteritis in South Africa (SA). STUDY DESIGN From April 2009 to December 2013, SaVs were characterised from stool specimens from children hospitalised with gastroenteritis in four provinces of SA. RESULTS Fourteen different SaV genotypes were identified from the 221 strains that were characterised. Genogroup (G) IV predominated overall and was detected in 24% (53/221) of specimens. The other identified genotypes included six belonging to GI (GI.1-GI.3, GI.5, GI.6, and GI.7) and seven belonging to GII (GII.1-GII.7). CONCLUSION This study has provided the first comprehensive data on the genetic diversity of SaVs in a clinical setting in SA, contributing to the global knowledge of this virus.
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Affiliation(s)
- Tanya Y Murray
- Department of Medical Virology, Faculty of Health Sciences, University of Pretoria, Private Bag X323, Arcadia, 0007 Pretoria, South Africa.
| | - Sandrama Nadan
- Department of Medical Virology, Faculty of Health Sciences, University of Pretoria, Private Bag X323, Arcadia, 0007 Pretoria, South Africa; Centre for Enteric Diseases, National Institute for Communicable Diseases, Private Bag X4, Sandringham, 2131 Johannesburg, South Africa.
| | - Nicola A Page
- Centre for Enteric Diseases, National Institute for Communicable Diseases, Private Bag X4, Sandringham, 2131 Johannesburg, South Africa.
| | - Maureen B Taylor
- Department of Medical Virology, Faculty of Health Sciences, University of Pretoria, Private Bag X323, Arcadia, 0007 Pretoria, South Africa.
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Iritani N, Yamamoto SP, Abe N, Kubo H, Oka T, Kaida A. Epidemics of GI.2 sapovirus in gastroenteritis outbreaks during 2012-2013 in Osaka City, Japan. J Med Virol 2016; 88:1187-93. [PMID: 26684081 DOI: 10.1002/jmv.24451] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 12/15/2015] [Indexed: 12/20/2022]
Abstract
Sapovirus (SaV) is a causative agent of gastroenteritis in humans in both sporadic cases and outbreaks. During the period from January 2005 to August 2014, SaV was detected in 30 (5.9%) of 510 gastroenteritis outbreaks in Osaka City, Japan using real-time RT-PCR. Seasonal distribution of SaV-associated outbreaks revealed an increase during the 2011-2012 season and the highest frequency of outbreaks during the 2012-2013 season. Genotyping analysis based on the capsid region demonstrated that the most common genotype was GI.2 (36.7%), in which the strains were closely related. The comparison of complete capsid gene sequences with 18 GI.2 strains (7 strains in this study and 11 from GenBank) between 1990 and 2013 showed that GI.2 strains were classified into at least three genetic clusters (1990-2000, 2004-2007, and 2008-2013) with chronologically unique amino acid residues and accumulation of mutations in the predicted P domain, suggesting the one of the causes of emergence and spread of GI.2 strains. This study will also be helpful for understanding the evolutionary mechanism of the SaV genome.
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Affiliation(s)
- Nobuhiro Iritani
- Department of Microbiology, Osaka City Institute of Public Health and Environmental Sciences, Osaka, Japan
| | - Seiji P Yamamoto
- Department of Microbiology, Osaka City Institute of Public Health and Environmental Sciences, Osaka, Japan
| | - Niichiro Abe
- Department of Microbiology, Osaka City Institute of Public Health and Environmental Sciences, Osaka, Japan
| | - Hideyuki Kubo
- Department of Microbiology, Osaka City Institute of Public Health and Environmental Sciences, Osaka, Japan
| | - Tomoichiro Oka
- Department of Virology II, National Institute of Infectious Diseases, Musashimurayama-shi, Tokyo, Japan
| | - Atsushi Kaida
- Department of Microbiology, Osaka City Institute of Public Health and Environmental Sciences, Osaka, Japan
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Choi HL, Suh CI, Park SW, Jin JY, Cho HG, Paik SY. Whole-Genome Sequencing Analysis of Sapovirus Detected in South Korea. PLoS One 2015; 10:e0132328. [PMID: 26161646 PMCID: PMC4498750 DOI: 10.1371/journal.pone.0132328] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/09/2015] [Accepted: 06/14/2015] [Indexed: 11/18/2022] Open
Abstract
Sapovirus (SaV), a virus residing in the intestines, is one of the important causes of gastroenteritis in human beings. Human SaV genomes are classified into various genogroups and genotypes. Whole-genome analysis and phylogenetic analysis of ROK62, the SaV isolated in South Korea, were carried out. The ROK62 genome of 7429 nucleotides contains 3 open-reading frames (ORF). The genotype of ROK62 is SaV GI-1, and 94% of its nucleotide sequence is identical with other SaVs, namely Manchester and Mc114. Recently, SaV infection has been on the rise throughout the world, particularly in countries neighboring South Korea; however, very few academic studies have been done nationally. As the first whole-genome sequence analysis of SaV in South Korea, this research will help provide reference for the detection of recombination, tracking of epidemic spread, and development of diagnosis methods for SaV.
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Affiliation(s)
- Hye Lim Choi
- Department of Microbiology, College of Medicine, The Catholic University of Korea, 222 Banpo-daero, Seocho-gu, Seoul, 137–701, Republic of Korea
| | - Chang-Il Suh
- Department of Medical Consilience, 152, Dankook University, Jukjeon-ro, Suji-gu, Yongin-si, Gyeonggi-do, 448–701, Republic of Korea
| | - Seung-Won Park
- Division of Biotechnology, Catholic University of Daegu, Daegu, 712–702, Republic of Korea
| | - Ji-Young Jin
- Department of Microbiology, College of Medicine, The Catholic University of Korea, 222 Banpo-daero, Seocho-gu, Seoul, 137–701, Republic of Korea
| | - Han-Gil Cho
- Division of Public Health Research, Gyeonggi Province Institute of Health and Environment, Suwon, Republic of Korea
| | - Soon-Young Paik
- Department of Microbiology, College of Medicine, The Catholic University of Korea, 222 Banpo-daero, Seocho-gu, Seoul, 137–701, Republic of Korea
- * E-mail:
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Usuku S, Kumazaki M. A gastroenteritis outbreak attributed to sapovirus genogroup v in Yokohama, Japan. Jpn J Infect Dis 2015; 67:411-2. [PMID: 25241698 DOI: 10.7883/yoken.67.411] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
Affiliation(s)
- Shuzo Usuku
- Department of Testing and Research, Yokohama City Institute of Health
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Abstract
Sapoviruses cause acute gastroenteritis in humans and animals. They belong to the genus Sapovirus within the family Caliciviridae. They infect and cause disease in humans of all ages, in both sporadic cases and outbreaks. The clinical symptoms of sapovirus gastroenteritis are indistinguishable from those caused by noroviruses, so laboratory diagnosis is essential to identify the pathogen. Sapoviruses are highly diverse genetically and antigenically. Currently, reverse transcription-PCR (RT-PCR) assays are widely used for sapovirus detection from clinical specimens due to their high sensitivity and broad reactivity as well as the lack of sensitive assays for antigen detection or cell culture systems for the detection of infectious viruses. Sapoviruses were first discovered in 1976 by electron microscopy in diarrheic samples of humans. To date, sapoviruses have also been detected from several animals: pigs, mink, dogs, sea lions, and bats. In this review, we focus on genomic and antigenic features, molecular typing/classification, detection methods, and clinical and epidemiological profiles of human sapoviruses.
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Wu W, Yang H, Zhang HL, Xian HX, Yao XJ, Zhao DJ, Chen L, Shu BH, Zhou YK, He YQ. Surveillance of pathogens causing gastroenteritis and characterization of norovirus and sapovirus strains in Shenzhen, China, during 2011. Arch Virol 2014; 159:1995-2002. [DOI: 10.1007/s00705-014-1986-6] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/16/2013] [Accepted: 01/12/2014] [Indexed: 01/11/2023]
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Mans J, Murray TY, Kiulia NM, Mwenda JM, Musoke RN, Taylor MB. Human caliciviruses detected in HIV-seropositive children in Kenya. J Med Virol 2013; 86:75-81. [PMID: 24123054 DOI: 10.1002/jmv.23784] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 08/27/2013] [Indexed: 12/15/2022]
Abstract
The human caliciviruses (HuCVs) are important causes of gastroenteritis worldwide. Norovirus (NoV) and sapovirus (SaV) have been detected in HIV-seropositive children but the genetic diversity of HuCVs circulating in these individuals is largely unknown. In this study the prevalence and genotype diversity of HuCVs circulating in Kenyan HIV-positive children, with or without diarrhea, from the year 1999 to 2000 was investigated. The overall prevalence of HuCVs was 19% with NoV predominating at 17% (18/105) and SaV present in 5.7% (6/105) of specimens. Human CVs were detected in both symptomatic (24%) and asymptomatic (16%) children. Co-infections with other enteric viruses were detected in 21.6% of children with diarrhea but only in 4.4% of children without diarrhea. Remarkable genetic diversity was observed with 12 genotypes (7 NoV, 5 SaV) being identified in 20 HuCV-infected children. NoV genogroup II (GII) strains predominated with GII.2 and GII.4 each representing 27% of the NoV-positive strains. The GII.4 strain was most closely related to the nonepidemic GII.4 Kaiso 2003 variant. Other NoV genotypes detected were GI.3, GII.6, GII.12, GII.14, and GII.17. Five different SaV genotypes (GI.2, GI.6, GII.1, GII.2, and GII.4) were characterized from six specimens. Diarrheal symptoms were not associated with any specific HuCV genotype. Overall the HuCV genotype distribution detected in this study reflects those in other studies worldwide. The strains detected are closely related to genotypes that have circulated on several continents since the year 2000.
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Affiliation(s)
- Janet Mans
- Department of Medical Virology, University of Pretoria, Arcadia, Pretoria, South Africa
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Iizuka S, Takai-Todaka R, Ohshiro H, Kitajima M, Wang Q, Saif LJ, Wakita T, Noda M, Katayama K, Oka T. Detection of multiple human sapoviruses from imported frozen individual clams. FOOD AND ENVIRONMENTAL VIROLOGY 2013; 5:119-125. [PMID: 23526313 DOI: 10.1007/s12560-013-9109-1] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/20/2012] [Accepted: 03/08/2013] [Indexed: 06/02/2023]
Abstract
Sapovirus (SaV), a member of the family Caliciviridae, is an important acute gastroenteritis pathogen in humans. Consumption of raw or inadequately cooked clams is one transmission route of human SaV. Sixty individual clams (Ruditapes philippinarum) were from market and tested for human SaVs using two nested reverse transcription-polymerase chain reaction (RT-PCR) assays, one of which was recently developed and effectively detected human SaV from environmental water samples. The nested RT-PCR effective for water samples showed a higher detection rate (68.3 %, 41 of 60 clams) than the other nested RT-PCR (43.3 %, 26 of 60 clams). Based on the sequence analysis of the partial capsid region, SaV strains detected in this study were classified into nine genotypes: GI.1, GI.3, GI.5, GI.6, GI.7, GII.3, GII.4, GIV.1, and GV.1. We demonstrated for the first time the presence of multiple genogroups and/or genotypes of SaV strains in the individual clams. Using a more sensitive assay such as we described to test individual clam samples will help to identify the source of a SaV-gastroenteritis outbreak.
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Affiliation(s)
- Setsuko Iizuka
- Division of Virology, Shimane Prefectural Institute of Public Health and Environmental Science, Shimane, Japan
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Murray TY, Mans J, Taylor MB. Human calicivirus diversity in wastewater in South Africa. J Appl Microbiol 2013; 114:1843-53. [PMID: 23414393 DOI: 10.1111/jam.12167] [Citation(s) in RCA: 39] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/21/2013] [Revised: 02/11/2013] [Accepted: 02/11/2013] [Indexed: 01/19/2023]
Abstract
AIM To investigate the diversity of human caliciviruses (HuCVs) in wastewater from small- to medium-sized communities in five provinces of South Africa (SA). METHODS AND RESULTS Wastewater samples (51) were screened for norovirus (NoV) GI, GII, GIV and sapovirus (SaV) using real-time reverse transcription (RT)-PCR. Partial capsid nucleotide sequences were analysed for genotyping. At least one HuCV was detected in 42 samples (82%) with NoV GI being detected in 15 (29%), NoV GII in 32 (63%) and SaV in 37 (73%) samples. NoV GIV was not detected. Five NoV GI genotypes (GI.1, GI.3, GI.4, GI.8 and GI.unassigned), eight NoV GII genotypes (GII.2, GII.3, GII.4, GII.6, GII.7, GII.12, GII.13 and GII.17) and six SaV genotypes (GI.2, GI.3, GI.6, GI.7, GII.1 and GII.2) were characterized. CONCLUSIONS Many NoV and SaV genotypes were detected in wastewater, demonstrating a high genetic diversity of HuCVs in the surrounding communities. Caliciviruses were characterized from several provinces in SA, indicating widespread occurrence in the country. SIGNIFICANCE AND IMPACT OF THE STUDY This study provides valuable new data on CVs circulating in SA, including the first data on SaV strains from wastewater in Africa. Environmental surveillance is especially important in countries like SA where outbreak reporting systems or routine HuCV surveillance is lacking.
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Affiliation(s)
- T Y Murray
- Department of Medical Virology, Faculty of Health Sciences, University of Pretoria, Arcadia, Pretoria, South Africa.
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