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Mijatovic-Rustempasic S, Jaimes J, Perkins C, Ward ML, Esona MD, Gautam R, Lewis J, Sturgeon M, Panjwani J, Bloom GA, Miller S, Reisdorf E, Riley AM, Pence MA, Dunn J, Selvarangan R, Jerris RC, DeGroat D, Parashar UD, Cortese MM, Bowen MD. Rotavirus Strain Trends in United States, 2009-2016: Results from the National Rotavirus Strain Surveillance System (NRSSS). Viruses 2022; 14:1775. [PMID: 36016397 PMCID: PMC9414880 DOI: 10.3390/v14081775] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/27/2022] [Revised: 08/05/2022] [Accepted: 08/09/2022] [Indexed: 11/16/2022] Open
Abstract
Before the introduction of vaccines, group A rotaviruses (RVA) were the leading cause of acute gastroenteritis in children worldwide. The National Rotavirus Strain Surveillance System (NRSSS) was established in 1996 by the Centers for Disease Control and Prevention (CDC) to perform passive RVA surveillance in the USA. We report the distribution of RVA genotypes collected through NRSSS during the 2009-2016 RVA seasons and retrospectively examine the genotypes detected through the NRSSS since 1996. During the 2009-2016 RVA seasons, 2134 RVA-positive fecal specimens were sent to the CDC for analysis of the VP7 and VP4 genes by RT-PCR genotyping assays and sequencing. During 2009-2011, RVA genotype G3P[8] dominated, while G12P[8] was the dominant genotype during 2012-2016. Vaccine strains were detected in 1.7% of specimens and uncommon/unusual strains, including equine-like G3P[8] strains, were found in 1.9%. Phylogenetic analyses showed limited VP7 and VP4 sequence variation within the common genotypes with 1-3 alleles/lineages identified per genotype. A review of 20 years of NRSSS surveillance showed two changes in genotype dominance, from G1P[8] to G3P[8] and then G3P[8] to G12P[8]. A better understanding of the long-term effects of vaccine use on epidemiological and evolutionary dynamics of circulating RVA strains requires continued surveillance.
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Affiliation(s)
- Slavica Mijatovic-Rustempasic
- Viral Gastroenteritis Branch, Division of Viral Diseases, National Center for Immunization and Respiratory Diseases, Centers for Disease Control and Prevention, 1600 Clifton Road NE, Mail Stop G-04, Atlanta, GA 30329, USA
| | - Jose Jaimes
- Viral Gastroenteritis Branch, Division of Viral Diseases, National Center for Immunization and Respiratory Diseases, Centers for Disease Control and Prevention, 1600 Clifton Road NE, Mail Stop G-04, Atlanta, GA 30329, USA
| | - Charity Perkins
- Viral Gastroenteritis Branch, Division of Viral Diseases, National Center for Immunization and Respiratory Diseases, Centers for Disease Control and Prevention, 1600 Clifton Road NE, Mail Stop G-04, Atlanta, GA 30329, USA
| | - M. Leanne Ward
- Viral Gastroenteritis Branch, Division of Viral Diseases, National Center for Immunization and Respiratory Diseases, Centers for Disease Control and Prevention, 1600 Clifton Road NE, Mail Stop G-04, Atlanta, GA 30329, USA
| | - Mathew D. Esona
- Viral Gastroenteritis Branch, Division of Viral Diseases, National Center for Immunization and Respiratory Diseases, Centers for Disease Control and Prevention, 1600 Clifton Road NE, Mail Stop G-04, Atlanta, GA 30329, USA
| | - Rashi Gautam
- Viral Gastroenteritis Branch, Division of Viral Diseases, National Center for Immunization and Respiratory Diseases, Centers for Disease Control and Prevention, 1600 Clifton Road NE, Mail Stop G-04, Atlanta, GA 30329, USA
| | - Jamie Lewis
- Viral Gastroenteritis Branch, Division of Viral Diseases, National Center for Immunization and Respiratory Diseases, Centers for Disease Control and Prevention, 1600 Clifton Road NE, Mail Stop G-04, Atlanta, GA 30329, USA
| | - Michele Sturgeon
- Viral Gastroenteritis Branch, Division of Viral Diseases, National Center for Immunization and Respiratory Diseases, Centers for Disease Control and Prevention, 1600 Clifton Road NE, Mail Stop G-04, Atlanta, GA 30329, USA
| | - Junaid Panjwani
- Viral Gastroenteritis Branch, Division of Viral Diseases, National Center for Immunization and Respiratory Diseases, Centers for Disease Control and Prevention, 1600 Clifton Road NE, Mail Stop G-04, Atlanta, GA 30329, USA
| | - Gail A. Bloom
- Indiana University Health Pathology Laboratory, Indiana University, 350 West 11th Street, Indianapolis, IN 46202, USA
| | - Steve Miller
- UCSF Clinical Microbiology Laboratory, 185 Berry St, Suite 290, San Francisco, CA 94107, USA
| | - Erik Reisdorf
- Wisconsin State Laboratory of Hygiene, 2601 Agriculture Drive, Madison, WI 53718, USA
| | - Ann Marie Riley
- Infectious Disease Diagnostic Laboratory, Boston Children’s Hospital, 300 Longwood Ave., Boston, MA 02115, USA
| | - Morgan A. Pence
- Cook Children’s Medical Center, 801 Seventh Ave., Fort Worth, TX 76104, USA
| | - James Dunn
- Medical Microbiology and Virology, Department of Pathology, Texas Children’s Hospital, 6621 Fannin Street, Suite AB1195, Houston, TX 77030, USA
| | | | - Robert C. Jerris
- Children’s Healthcare of Atlanta, 1405 Clifton Rd, Atlanta, GA 30329, USA
| | - Dona DeGroat
- Seattle Children’s Hospital, 5801 Sand Point Way NE, Seattle, WA 98105, USA
| | - Umesh D. Parashar
- Viral Gastroenteritis Branch, Division of Viral Diseases, National Center for Immunization and Respiratory Diseases, Centers for Disease Control and Prevention, 1600 Clifton Road NE, Mail Stop G-04, Atlanta, GA 30329, USA
| | - Margaret M. Cortese
- Viral Gastroenteritis Branch, Division of Viral Diseases, National Center for Immunization and Respiratory Diseases, Centers for Disease Control and Prevention, 1600 Clifton Road NE, Mail Stop G-04, Atlanta, GA 30329, USA
| | - Michael D. Bowen
- Viral Gastroenteritis Branch, Division of Viral Diseases, National Center for Immunization and Respiratory Diseases, Centers for Disease Control and Prevention, 1600 Clifton Road NE, Mail Stop G-04, Atlanta, GA 30329, USA
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Whole genome analysis of rotavirus strains circulating in Benin before vaccine introduction, 2016-2018. Virus Res 2022; 313:198715. [PMID: 35247484 DOI: 10.1016/j.virusres.2022.198715] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/12/2021] [Revised: 02/14/2022] [Accepted: 02/15/2022] [Indexed: 11/21/2022]
Abstract
Species A Rotaviruses (RVA) still play a major role in causing acute diarrhea in children under five years old worldwide. Currently, an 11-gene classification system is used to designate the full genotypic constellations of circulating strains. Viral proteins and non-structural proteins in the order VP7-VP4-VP6-VP1-VP2-VP3-NSP1-NSP2-NSP3-NSP4-NSP5/6 are represented by the genotypes Gx-P[x]-Ix-Rx-Cx-Mx-Ax-Nx-Tx-Ex-Hx, respectively. In Benin, ROTAVAC® vaccine was introduced into the Expanded Programme on Immunization in December 2019. To monitor circulating RVA strains for changes that may affect vaccine performance, in-depth analysis of strains prior to vaccine introduction are needed. Here we report, the whole-gene characterization (11 ORFs) for 72 randomly selected RVA strains of common and unusual genotypes collected in Benin from the 2016-2018 seasons. The sequenced strains were 15 G1P[8], 20 G2P[4], 5 G9P[8], 14 G12P[8], 9 G3P[6], 2 G1P[6], 3 G2P[6], 2 G9P[4], 1 G12P[6], and 1 G1G9P[8]/P[4]. The study strains exhibited two genetic constellations designed as Wa-like G1/G9/G12-P[6]/P[8]-I1-R1-C1-M1-A1-N1-T1-E1-H1 and DS-1-like G2/G3/G12-P[4]/P[6]-I2-R2-C2-M2-A2-N2-T2-E2-H2. Genotype G9P[4] strains possessed a DS-1-like genetic constellation with an E6 NSP4 gene, G9-P[4]-I2-R2-C2-M2-A2-N2-T2-E6-H2. The mixed genotype showed both Wa-like and DS-1-like profiles with a T6 NSP3 gene G1/G9P[8]/[4]-I1/I2-R1/R2-C1/C2-M1/M2-A1/A2-N1/N2-T1/T6-E1/E6-H1/H2. At the allelic level, the analysis of the Benin strains, reference strains (with known alleles), vaccine strains (with known alleles) identified 2-13 and 1-17 alleles for DS-1-like and Wa-like strains, respectively. Most of the study strains clustered into previously defined alleles, but we defined 3 new alleles for the VP7 (G3=1 new allele and G12=2 new alleles) and VP4 (P[4]=1 new allele and P[6]=2 new alleles) genes which formed the basis of the VP7 and VP4 gene clusters, respectively. For the remaining 9 genes, 0-6 new alleles were identified for both Wa-like and DS-1-like strains. This analysis of whole genome sequences of RVA strains circulating in Benin described genetic point mutations and reassortment events as well as novel alleles. Further detailed studies on these new alleles are needed and these data can also provide a baseline for studies on RVA in the post-vaccination period.
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Munlela B, João ED, Donato CM, Strydom A, Boene SS, Chissaque A, Bauhofer AFL, Langa J, Cassocera M, Cossa-Moiane I, Chilaúle JJ, O’Neill HG, de Deus N. Whole Genome Characterization and Evolutionary Analysis of G1P[8] Rotavirus A Strains during the Pre- and Post-Vaccine Periods in Mozambique (2012-2017). Pathogens 2020; 9:pathogens9121026. [PMID: 33291333 PMCID: PMC7762294 DOI: 10.3390/pathogens9121026] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/26/2020] [Revised: 12/03/2020] [Accepted: 12/03/2020] [Indexed: 11/22/2022] Open
Abstract
Mozambique introduced the Rotarix® vaccine (GSK Biologicals, Rixensart, Belgium) into the National Immunization Program in September 2015. Although G1P[8] was one of the most prevalent genotypes between 2012 and 2017 in Mozambique, no complete genomes had been sequenced to date. Here we report whole genome sequence analysis for 36 G1P[8] strains using an Illumina MiSeq platform. All strains exhibited a Wa-like genetic backbone (G1-P[8]-I1-R1-C1-M1-A1-N1-T1-E1-H1). Phylogenetic analysis showed that most of the Mozambican strains clustered closely together in a conserved clade for the entire genome. No distinct clustering for pre- and post-vaccine strains were observed. These findings may suggest no selective pressure by the introduction of the Rotarix® vaccine in 2015. Two strains (HJM1646 and HGM0544) showed varied clustering for the entire genome, suggesting reassortment, whereas a further strain obtained from a rural area (MAN0033) clustered separately for all gene segments. Bayesian analysis for the VP7 and VP4 encoding gene segments supported the phylogenetic analysis and indicated a possible introduction from India around 2011.7 and 2013.0 for the main Mozambican clade. Continued monitoring of rotavirus strains in the post-vaccine period is required to fully understand the impact of vaccine introduction on the diversity and evolution of rotavirus strains.
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Affiliation(s)
- Benilde Munlela
- Instituto Nacional de Saúde (INS), Distrito de Marracuene, Maputo 3943, Mozambique; (S.S.B.); (A.C.); (A.F.L.B.); (J.L.); (M.C.); (I.C.-M.); (J.J.C.); (N.d.D.)
- Centro de Biotecnologia, Universidade Eduardo Mondlane, Maputo 3453, Mozambique
- Correspondence: or (B.M.); (E.D.J.); Tel.: +258-848814087 (B.M.); +258-827479229 (E.D.J.)
| | - Eva D. João
- Instituto Nacional de Saúde (INS), Distrito de Marracuene, Maputo 3943, Mozambique; (S.S.B.); (A.C.); (A.F.L.B.); (J.L.); (M.C.); (I.C.-M.); (J.J.C.); (N.d.D.)
- Instituto de Higiene e Medicina Tropical (IHMT), Universidade Nova de Lisboa, UNL, Rua da Junqueira 100, 1349-008 Lisbon, Portugal
- Correspondence: or (B.M.); (E.D.J.); Tel.: +258-848814087 (B.M.); +258-827479229 (E.D.J.)
| | - Celeste M. Donato
- Enteric Diseases Group, Murdoch Children’s Research Institute, 50 Flemington Road, Parkville, Melbourne 3052, Australia;
- Department of Paediatrics, the University of Melbourne, Parkville 3010, Australia
- Biomedicine Discovery Institute and Department of Microbiology, Monash University, Clayton 3800, Australia
| | - Amy Strydom
- Department of Microbial, Biochemical and Food Biotechnology, University of the Free State, 205 Nelson Mandela Avenue, Bloemfontein 9301, South Africa; (A.S.); (H.G.O.)
| | - Simone S. Boene
- Instituto Nacional de Saúde (INS), Distrito de Marracuene, Maputo 3943, Mozambique; (S.S.B.); (A.C.); (A.F.L.B.); (J.L.); (M.C.); (I.C.-M.); (J.J.C.); (N.d.D.)
- Centro de Biotecnologia, Universidade Eduardo Mondlane, Maputo 3453, Mozambique
| | - Assucênio Chissaque
- Instituto Nacional de Saúde (INS), Distrito de Marracuene, Maputo 3943, Mozambique; (S.S.B.); (A.C.); (A.F.L.B.); (J.L.); (M.C.); (I.C.-M.); (J.J.C.); (N.d.D.)
- Instituto de Higiene e Medicina Tropical (IHMT), Universidade Nova de Lisboa, UNL, Rua da Junqueira 100, 1349-008 Lisbon, Portugal
| | - Adilson F. L. Bauhofer
- Instituto Nacional de Saúde (INS), Distrito de Marracuene, Maputo 3943, Mozambique; (S.S.B.); (A.C.); (A.F.L.B.); (J.L.); (M.C.); (I.C.-M.); (J.J.C.); (N.d.D.)
- Instituto de Higiene e Medicina Tropical (IHMT), Universidade Nova de Lisboa, UNL, Rua da Junqueira 100, 1349-008 Lisbon, Portugal
| | - Jerónimo Langa
- Instituto Nacional de Saúde (INS), Distrito de Marracuene, Maputo 3943, Mozambique; (S.S.B.); (A.C.); (A.F.L.B.); (J.L.); (M.C.); (I.C.-M.); (J.J.C.); (N.d.D.)
| | - Marta Cassocera
- Instituto Nacional de Saúde (INS), Distrito de Marracuene, Maputo 3943, Mozambique; (S.S.B.); (A.C.); (A.F.L.B.); (J.L.); (M.C.); (I.C.-M.); (J.J.C.); (N.d.D.)
- Instituto de Higiene e Medicina Tropical (IHMT), Universidade Nova de Lisboa, UNL, Rua da Junqueira 100, 1349-008 Lisbon, Portugal
| | - Idalécia Cossa-Moiane
- Instituto Nacional de Saúde (INS), Distrito de Marracuene, Maputo 3943, Mozambique; (S.S.B.); (A.C.); (A.F.L.B.); (J.L.); (M.C.); (I.C.-M.); (J.J.C.); (N.d.D.)
- Institute of Tropical Medicine (ITM), Kronenburgstraat 43, 2000 Antwerp, Belgium
| | - Jorfélia J. Chilaúle
- Instituto Nacional de Saúde (INS), Distrito de Marracuene, Maputo 3943, Mozambique; (S.S.B.); (A.C.); (A.F.L.B.); (J.L.); (M.C.); (I.C.-M.); (J.J.C.); (N.d.D.)
| | - Hester G. O’Neill
- Department of Microbial, Biochemical and Food Biotechnology, University of the Free State, 205 Nelson Mandela Avenue, Bloemfontein 9301, South Africa; (A.S.); (H.G.O.)
| | - Nilsa de Deus
- Instituto Nacional de Saúde (INS), Distrito de Marracuene, Maputo 3943, Mozambique; (S.S.B.); (A.C.); (A.F.L.B.); (J.L.); (M.C.); (I.C.-M.); (J.J.C.); (N.d.D.)
- Departamento de Ciências Biológicas, Universidade Eduardo Mondlane, Maputo 3453, Mozambique
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Mwangi PN, Mogotsi MT, Seheri ML, Mphahlele MJ, Peenze I, Esona MD, Kumwenda B, Steele AD, Kirkwood CD, Ndze VN, Dennis FE, Jere KC, Nyaga MM. Whole Genome In-Silico Analysis of South African G1P[8] Rotavirus Strains Before and After Vaccine Introduction Over A Period of 14 Years. Vaccines (Basel) 2020; 8:E609. [PMID: 33066615 PMCID: PMC7712154 DOI: 10.3390/vaccines8040609] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/07/2020] [Revised: 10/08/2020] [Accepted: 10/13/2020] [Indexed: 12/03/2022] Open
Abstract
Rotavirus G1P[8] strains account for more than half of the group A rotavirus (RVA) infections in children under five years of age, globally. A total of 103 stool samples previously characterized as G1P[8] and collected seven years before and seven years after introducing the Rotarix® vaccine in South Africa were processed for whole-genome sequencing. All the strains analyzed had a Wa-like constellation (G1-P[8]-I1-R1-C1-M1-A1-N1-T1-E1-H1). South African pre- and post-vaccine G1 strains were clustered in G1 lineage-I and II while the majority (84.2%) of the P[8] strains were grouped in P[8] lineage-III. Several amino acid sites across ten gene segments with the exception of VP7 were under positive selective pressure. Except for the N147D substitution in the antigenic site of eight post-vaccine G1 strains when compared to both Rotarix® and pre-vaccine strains, most of the amino acid substitutions in the antigenic regions of post-vaccine G1P[8] strains were already present during the pre-vaccine period. Therefore, Rotarix® did not appear to have an impact on the amino acid differences in the antigenic regions of South African post-vaccine G1P[8] strains. However, continued whole-genome surveillance of RVA strains to decipher genetic changes in the post-vaccine period remains imperative.
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Affiliation(s)
- Peter N. Mwangi
- Next Generation Sequencing Unit and Division of Virology, Faculty of Health Sciences, University of the Free State, Bloemfontein 9300, South Africa; (P.N.M.); (M.T.M.)
| | - Milton T. Mogotsi
- Next Generation Sequencing Unit and Division of Virology, Faculty of Health Sciences, University of the Free State, Bloemfontein 9300, South Africa; (P.N.M.); (M.T.M.)
| | - Mapaseka L. Seheri
- Diarrheal Pathogens Research Unit, Sefako Makgatho Health Sciences University, Medunsa 0204, South Africa; (M.L.S.); (M.J.M.); (I.P.); (M.D.E.)
| | - M. Jeffrey Mphahlele
- Diarrheal Pathogens Research Unit, Sefako Makgatho Health Sciences University, Medunsa 0204, South Africa; (M.L.S.); (M.J.M.); (I.P.); (M.D.E.)
- South African Medical Research Council, Pretoria 0001, South Africa
| | - Ina Peenze
- Diarrheal Pathogens Research Unit, Sefako Makgatho Health Sciences University, Medunsa 0204, South Africa; (M.L.S.); (M.J.M.); (I.P.); (M.D.E.)
| | - Mathew D. Esona
- Diarrheal Pathogens Research Unit, Sefako Makgatho Health Sciences University, Medunsa 0204, South Africa; (M.L.S.); (M.J.M.); (I.P.); (M.D.E.)
| | - Benjamin Kumwenda
- College of Medicine, Department of Biomedical Sciences, Faculty of Biomedical Sciences and Health Professions, University of Malawi, Private Bag 360, Chichiri, Blantyre 3, Malawi;
| | - A. Duncan Steele
- Enteric and Diarrheal Diseases, Global Health, Bill & Melinda Gates Foundation, P.O. Box 23350, Seattle, WA 98109, USA; (A.D.S.); (C.D.K.)
| | - Carl D. Kirkwood
- Enteric and Diarrheal Diseases, Global Health, Bill & Melinda Gates Foundation, P.O. Box 23350, Seattle, WA 98109, USA; (A.D.S.); (C.D.K.)
| | - Valantine N. Ndze
- Faculty of Health Sciences, University of Buea, P.O. Box 63, Buea, Cameroon;
| | - Francis E. Dennis
- Noguchi Memorial Institute for Medical Research, University of Ghana, P.O. Box LG581, Legon, Ghana;
| | - Khuzwayo C. Jere
- Center for Global Vaccine Research, Institute of Infection, Liverpool L697BE, UK;
- Veterinary and Ecological Sciences, University of Liverpool, Liverpool L697BE, UK
- Malawi-Liverpool-Wellcome Trust Clinical Research Program, Department of Medical Laboratory Sciences, College of Medicine, University of Malawi, Blantyre 312225, Malawi
| | - Martin M. Nyaga
- Next Generation Sequencing Unit and Division of Virology, Faculty of Health Sciences, University of the Free State, Bloemfontein 9300, South Africa; (P.N.M.); (M.T.M.)
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Shin DY, Yi DY, Jo S, Lee YM, Kim JH, Kim W, Park MR, Yoon SM, Kim Y, Yang S, Lim IS. Effect of a new Lactobacillus plantarum product, LRCC5310, on clinical symptoms and virus reduction in children with rotaviral enteritis. Medicine (Baltimore) 2020; 99:e22192. [PMID: 32957348 PMCID: PMC7505315 DOI: 10.1097/md.0000000000022192] [Citation(s) in RCA: 14] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/05/2023] Open
Abstract
BACKGROUND Rotavirus is one of the most common causes of infantile enteritis. In common enterocolitis, probiotic organisms, including Lactobacilli, are effective in treating diarrhea. A new species, Lactobacillus plantarum (LRCC5310), which was shown to inhibit the adherence and proliferation of rotavirus in the small intestine through animal experiments, was investigated for the efficacy and safety of patients with rotaviral enteritis. METHODS LRCC5310 (Group I) and control (Group II) groups consisting of children who were hospitalized for rotaviral enteritis were compared, and the medical records of patients (Group III) who were hospitalized for rotaviral enteritis during the same study period were retrospectively analyzed. Clinical symptoms were compared and stool samples were collected to compare changes in virus multiplication between Groups I and II. RESULTS Groups I, II, and III comprised 15, 8, and 27 children, respectively. There were no differences in clinical information among the groups at admission. In Group I, a statistically significant improvement was noted in the number of patients with diarrhea, number of defecation events on Day 3, and total diarrhea period as opposed to Group II (P = .033, P = .003, and P = .012, respectively). The improvement of Vesikari score in Group I was greater than that in the other groups (P = .076, P = .061, and P = .036, respectively). Among rotavirus genotypes, 9 (22.5%) strains and 8 (20.0%) strains belonged to the G9P8 and G1P8 genotypes, respectively. The virus reduction effect, as confirmed via stool specimens, was also greater in Group I. No significant side effects were noted in infants. CONCLUSION LRCC5310 improved clinical symptoms, including diarrhea and Vesikari score, and inhibited viral proliferation in rotaviral gastroenteritis.
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Affiliation(s)
- Do Young Shin
- Department of Pediatrics, Chung-Ang University Hospital
| | - Dae Yong Yi
- Department of Pediatrics, Chung-Ang University Hospital
- College of Medicine, Chung-Ang University, Seoul
| | - Soojin Jo
- Department of Pediatrics, Chung-Ang University Hospital
| | - Yoo Min Lee
- Department of Pediatrics, Soonchunhyang University Bucheon Hospital, Bucheon
| | - Jong-Hwa Kim
- Department of Microbiology, Chung-Ang University College of Medicine
| | - Wonyong Kim
- Department of Microbiology, Chung-Ang University College of Medicine
| | - Mi ri Park
- Lotte R&D Center, Seoul, Republic of Korea
| | | | - Yunsik Kim
- Lotte R&D Center, Seoul, Republic of Korea
| | | | - In Seok Lim
- Department of Pediatrics, Chung-Ang University Hospital
- College of Medicine, Chung-Ang University, Seoul
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Whole genome and in-silico analyses of G1P[8] rotavirus strains from pre- and post-vaccination periods in Rwanda. Sci Rep 2020; 10:13460. [PMID: 32778711 PMCID: PMC7417577 DOI: 10.1038/s41598-020-69973-1] [Citation(s) in RCA: 14] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/09/2020] [Accepted: 07/17/2020] [Indexed: 11/09/2022] Open
Abstract
Rwanda was the first low-income African country to introduce RotaTeq vaccine into its Expanded Programme on Immunization in May 2012. To gain insights into the overall genetic make-up and evolution of Rwandan G1P[8] strains pre- and post-vaccine introduction, rotavirus positive fecal samples collected between 2011 and 2016 from children under the age of 5 years as part of ongoing surveillance were genotyped with conventional RT-PCR based methods and whole genome sequenced using the Illumina MiSeq platform. From a pool of samples sequenced (n = 158), 36 were identified as G1P[8] strains (10 pre-vaccine and 26 post-vaccine), of which 35 exhibited a typical Wa-like genome constellation. However, one post vaccine strain, RVA/Human-wt/RWA/UFS-NGS:MRC-DPRU442/2012/G1P[8], exhibited a RotaTeq vaccine strain constellation of G1-P[8]-I2-R2-C2-M2-A3-N2-T6-E2-H3, with most of the gene segments having a close relationship with a vaccine derived reassortant strain, previously reported in USA in 2010 and Australia in 2012. The study strains segregated into two lineages, each containing a paraphyletic pre- and post-vaccine introduction sub-lineages. In addition, the study strains demonstrated close relationship amongst each other when compared with globally selected group A rotavirus (RVA) G1P[8] reference strains. For VP7 neutralization epitopes, amino acid substitutions observed at positions T91A/V, S195D and M217T in relation to the RotaTeq vaccine were radical in nature and resulted in a change in polarity from a polar to non-polar molecule, while for the VP4, amino acid differences at position D195G was radical in nature and resulted in a change in polarity from a polar to non-polar molecule. The polarity change at position T91A/V of the neutralizing antigens might play a role in generating vaccine-escape mutants, while substitutions at positions S195D and M217T may be due to natural fluctuation of the RVA. Surveillance of RVA at whole genome level will enhance further assessment of vaccine impact on circulating strains, the frequency of reassortment events under natural conditions and epidemiological fitness generated by such events.
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Uncovering the First Atypical DS-1-like G1P[8] Rotavirus Strains That Circulated during Pre-Rotavirus Vaccine Introduction Era in South Africa. Pathogens 2020; 9:pathogens9050391. [PMID: 32443835 PMCID: PMC7281366 DOI: 10.3390/pathogens9050391] [Citation(s) in RCA: 14] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/13/2020] [Revised: 05/06/2020] [Accepted: 05/18/2020] [Indexed: 11/21/2022] Open
Abstract
Emergence of DS-1-like G1P[8] group A rotavirus (RVA) strains during post-rotavirus vaccination period has recently been reported in several countries. This study demonstrates, for the first time, rare atypical DS-1-like G1P[8] RVA strains that circulated in 2008 during pre-vaccine era in South Africa. Rotavirus positive samples were subjected to whole-genome sequencing. Two G1P[8] strains (RVA/Human-wt/ZAF/UFS-NGS-MRC-DPRU1971/2008/G1P[8] and RVA/Human-wt/ZAF/UFS-NGS-MRC-DPRU1973/2008/G1P[8]) possessed a DS-1-like genome constellation background (I2-R2-C2-M2-A2-N2-T2-E2-H2). The outer VP4 and VP7 capsid genes of the two South African G1P[8] strains had the highest nucleotide (amino acid) nt (aa) identities of 99.6–99.9% (99.1–100%) with the VP4 and the VP7 genes of a locally circulating South African strain, RVA/Human-wt/ZAF/MRC-DPRU1039/2008/G1P[8]. All the internal backbone genes (VP1–VP3, VP6, and NSP1-NSP5) had the highest nt (aa) identities with cognate internal genes of another locally circulating South African strain, RVA/Human-wt/ZAF/MRC-DPRU2344/2008/G2P[6]. The two study strains emerged through reassortment mechanism involving locally circulating South African strains, as they were distinctly unrelated to other reported atypical G1P[8] strains. The identification of these G1P[8] double-gene reassortants during the pre-vaccination period strongly supports natural RVA evolutionary mechanisms of the RVA genome. There is a need to maintain long-term whole-genome surveillance to monitor such atypical strains.
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Novikova NA, Sashina TA, Epifanova NV, Kashnikov AU, Morozova OV. Long-term monitoring of G1P[8] rotaviruses circulating without vaccine pressure in Nizhny Novgorod, Russia, 1984-2019. Arch Virol 2020; 165:865-875. [DOI: 10.1007/s00705-020-04553-2] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/08/2019] [Accepted: 01/18/2020] [Indexed: 01/01/2023]
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9
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Katz EM, Esona MD, Betrapally NS, De La Cruz De Leon LA, Neira YR, Rey GJ, Bowen MD. Whole-gene analysis of inter-genogroup reassortant rotaviruses from the Dominican Republic: Emergence of equine-like G3 strains and evidence of their reassortment with locally-circulating strains. Virology 2019; 534:114-131. [PMID: 31228725 DOI: 10.1016/j.virol.2019.06.007] [Citation(s) in RCA: 33] [Impact Index Per Article: 6.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/15/2019] [Revised: 06/12/2019] [Accepted: 06/12/2019] [Indexed: 11/26/2022]
Abstract
Inter-genogroup reassortant group A rotavirus (RVA) strains possessing a G3 VP7 gene of putative equine origin (EQL-G3) have been detected in humans since 2013. Here we report detection of EQL-G3P[8] RVA strains from the Dominican Republic collected in 2014-16. Whole-gene analysis of RVA in stool specimens revealed 16 EQL-G3P[8] strains, 3 of which appear to have acquired an N1 NSP1 gene from locally-circulating G9P[8] strains and a novel G2P[8] reassortant possessing 7 EQL-G3-associated genes and 3 genes from a locally-circulating G2P[4] strain. Phylogenetic/genetic analyses of VP7 gene sequences revealed nine G3 lineages (I-IX) with newly-assigned lineage IX encompassing all reported human EQL-G3 strains along with the ancestral equine strain. VP1 and NSP2 gene phylogenies suggest that EQL-G3P[8] strains were introduced into the Dominican Republic from Thailand. The emergence of EQL-G3P[8] strains in the Dominican Republic and their reassortment with locally-circulating RVA could have implications for current vaccination strategies.
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Affiliation(s)
- Eric M Katz
- Cherokee Nation Assurance, Contracting Agency to the Division of Viral Diseases, Centers for Disease Control and Prevention, Arlington, VA, USA; Division of Viral Diseases, National Center for Immunization and Respiratory Diseases, Centers for Disease Control and Prevention, Atlanta, GA, USA
| | - Mathew D Esona
- Division of Viral Diseases, National Center for Immunization and Respiratory Diseases, Centers for Disease Control and Prevention, Atlanta, GA, USA
| | - Naga S Betrapally
- Division of Viral Diseases, National Center for Immunization and Respiratory Diseases, Centers for Disease Control and Prevention, Atlanta, GA, USA
| | | | - Yenny R Neira
- Pan American Health Organization/World Health Organization, Santo Domingo, Dominican Republic
| | - Gloria J Rey
- Pan American Health Organization, Washington, D.C, USA
| | - Michael D Bowen
- Division of Viral Diseases, National Center for Immunization and Respiratory Diseases, Centers for Disease Control and Prevention, Atlanta, GA, USA.
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Fujii Y, Doan YH, Suzuki Y, Nakagomi T, Nakagomi O, Katayama K. Study of Complete Genome Sequences of Rotavirus A Epidemics and Evolution in Japan in 2012-2014. Front Microbiol 2019; 10:38. [PMID: 30766516 PMCID: PMC6365416 DOI: 10.3389/fmicb.2019.00038] [Citation(s) in RCA: 17] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/12/2018] [Accepted: 01/10/2019] [Indexed: 11/13/2022] Open
Abstract
A comprehensive molecular epidemiological study using next-generation sequencing technology was conducted on 333 rotavirus A (RVA)-positive specimens collected from six sentinel hospitals across Japan over three consecutive seasons (2012–2014). The majority of the RVA isolates were grouped into five genotype constellations: Wa-like G1P[8], DS-1-like G1P[8], G2P[4], G3P[8] and G9P[8]. Phylogenetic analysis showed that the distribution of strains varied by geographical locations and epidemic seasons. The VP7 genes of different G types were estimated to evolve at 7.26 × 10-4–1.04 × 10-3 nucleotide substitutions per site per year. The Bayesian time-scaled tree of VP7 showed that the time to the most recent common ancestor of epidemic strains within a region was 1–3 years, whereas that of the epidemic strains across the country was 2–6 years. This study provided, for the first time, the timeframe during which an epidemic strain spread locally and within the country and baseline information needed to predict how rapidly RVAs spread.
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Affiliation(s)
- Yoshiki Fujii
- Department of Virology II, National Institute of Infectious Diseases, Tokyo, Japan
| | - Yen Hai Doan
- Department of Virology II, National Institute of Infectious Diseases, Tokyo, Japan
| | - Yoshiyuki Suzuki
- Graduate School of Natural Sciences, Nagoya City University, Nagoya, Japan
| | - Toyoko Nakagomi
- Department of Hygiene and Molecular Epidemiology, Nagasaki University, Nagasaki, Japan
| | - Osamu Nakagomi
- Department of Hygiene and Molecular Epidemiology, Nagasaki University, Nagasaki, Japan
| | - Kazuhiko Katayama
- Department of Virology II, National Institute of Infectious Diseases, Tokyo, Japan.,Laboratory of Viral Infection I, Kitasato University, Tokyo, Japan
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Do LP, Nakagomi T, Otaki H, Agbemabiese CA, Nakagomi O, Tsunemitsu H. Phylogenetic inference of the porcine Rotavirus A origin of the human G1 VP7 gene. INFECTION GENETICS AND EVOLUTION 2016; 40:205-213. [PMID: 26961591 DOI: 10.1016/j.meegid.2016.03.001] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/09/2015] [Revised: 02/25/2016] [Accepted: 03/01/2016] [Indexed: 01/15/2023]
Abstract
Rotavirus A (RVA) is an important cause of acute gastroenteritis in children worldwide. The most common VP7 genotype of human RVA is G1, but G1 is rarely detected in porcine strains. To understand the evolutionary relationships between human and porcine G1 VP7 genes, we sequenced the VP7 genes of three Japanese G1 porcine strains; the first two (PRV2, S80B) were isolated in 1980 and the third (Kyusyu-14) was isolated in 2001. Then, we performed phylogenetic and in-silico structural analyses. All three VP7 sequences clustered into lineage VI, and the mean nucleotide sequence identity between any pair of porcine G1 VP7 sequences belonging to lineage VI was 91.9%. In contrast, the mean nucleotide sequence identity between any pair of human G1 VP7 sequences belonging to lineages I-V was 95.5%. While the mean nucleotide sequence identity between any pair of porcine lineage VI strain and human lineage I-V strain was 85.4%, the VP7 genes of PRV2 and a rare porcine-like human G1P[6] strain (AU19) were 98% identical, strengthening the porcine RVA origin of AU19. The phylogenetic tree suggests that human G1 VP7 genes originated from porcine G1 VP7 genes. The time of their most recent common ancestor was estimated to be 1948, and human and porcine RVA strains evolved along independent pathways. In-silico structural analyses identified 7 amino acid residues within the known neutralisation epitopes that show differences in electric charges and shape between different porcine and human G1 strains. When compared with much divergent porcine G1 VP7 lineages, monophyletic, less divergent human G1 VP7 lineages support the hypothesis that all human G1 VP7 genes included in this study originated from a rare event of a porcine RVA transmitting to humans that was followed by successful adaptation to the human host. By contrast, AU19 represents interspecies transmission that terminated in dead-end infection.
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Affiliation(s)
- Loan Phuong Do
- Department of Hygiene and Molecular Epidemiology, Graduate School of Biomedical Sciences, Nagasaki University, Nagasaki, Japan; Department of Virology, National Institute of Hygiene and Epidemiology, Hanoi, Vietnam
| | - Toyoko Nakagomi
- Department of Hygiene and Molecular Epidemiology, Graduate School of Biomedical Sciences, Nagasaki University, Nagasaki, Japan; Centre for Bioinformatics and Molecular Medicine, Graduate School of Biomedical Sciences, Nagasaki University, Nagasaki, Japan
| | - Hiroki Otaki
- Centre for Bioinformatics and Molecular Medicine, Graduate School of Biomedical Sciences, Nagasaki University, Nagasaki, Japan
| | - Chantal Ama Agbemabiese
- Department of Hygiene and Molecular Epidemiology, Graduate School of Biomedical Sciences, Nagasaki University, Nagasaki, Japan
| | - Osamu Nakagomi
- Department of Hygiene and Molecular Epidemiology, Graduate School of Biomedical Sciences, Nagasaki University, Nagasaki, Japan; Centre for Bioinformatics and Molecular Medicine, Graduate School of Biomedical Sciences, Nagasaki University, Nagasaki, Japan.
| | - Hiroshi Tsunemitsu
- Dairy Hygiene Research Division, Hokkaido Research Station, National Institute of Animal Health, Sapporo, Hokkaido, Japan
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Jalilvand S, Afchangi A, Mohajel N, Roohvand F, Shoja Z. Diversity of VP7 genes of G1 rotaviruses isolated in Iran, 2009–2013. INFECTION GENETICS AND EVOLUTION 2016; 37:275-9. [DOI: 10.1016/j.meegid.2015.09.025] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/31/2015] [Revised: 09/26/2015] [Accepted: 09/28/2015] [Indexed: 10/23/2022]
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13
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Do LP, Doan YH, Nakagomi T, Kaneko M, Gauchan P, Ngo CT, Nguyen MB, Yamashiro T, Dang AD, Nakagomi O. Molecular characterisation of wild-type G1P[8] and G3P[8] rotaviruses isolated in Vietnam 2008 during a vaccine trial. Arch Virol 2015; 161:833-50. [PMID: 26711453 DOI: 10.1007/s00705-015-2706-6] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/05/2015] [Accepted: 11/27/2015] [Indexed: 01/04/2023]
Abstract
Rotavirus vaccines work better in developed countries than in developing countries, leading to the question of whether the circulating strains are different in these two settings. In 2008, a clinical trial of the pentavalent rotavirus vaccine was performed in Nha Trang, Vietnam, in which the efficacy was reported to be 64 %. Although samples were collected independently from the clinical trial, we examined faecal specimens from children hospitalised for rotavirus diarrhoea and found that G3P[8] and G1P[8] were co-dominant at the time of the clinical trial. The aim of this study was to explore whether they were divergent from the strains circulating in the developed countries where the vaccine efficacy is high. Two G3P[8] and two G1P[8] strains that were regarded as representatives based on their electropherotypes were selected for full-genome sequencing. The genotype constellation was G1/G3-P[8]-I1-R1-C1-M1-A1-N1-T1-E1-H1. All but the VP4 genes, one of which belonged to the emerging P[8]b genotype (OP354-like VP4), clustered into one or more lineages/alleles with the strains circulating in developed countries, with ≥97.5 % nucleotide sequence identity. Additionally, 10 G1 and 12 G3 VP7 sequences as well as 31 VP4 sequences were determined. No amino acid differences were observed between the Vietnamese strains and strains in the developed countries that were likely to have affected the neutralisation specificity of their VP7 and VP4. In conclusion, apart from prevalent P[8]b VP4, virtually no differences were observed between the predominant strains circulating in Vietnam at the time of the clinical trial and the strains in the developed countries; hence, the lower vaccine efficacy was more likely to be due to factors other than strain divergence.
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Affiliation(s)
- L P Do
- Department of Hygiene and Molecular Epidemiology, Graduate School of Biomedical Sciences, Nagasaki University, 1-12-4 Sakamoto, Nagasaki, 852-8523, Japan.,National Institute of Hygiene and Epidemiology, Hanoi, Vietnam
| | - Y H Doan
- Department of Hygiene and Molecular Epidemiology, Graduate School of Biomedical Sciences, Nagasaki University, 1-12-4 Sakamoto, Nagasaki, 852-8523, Japan.,Department of Virology 2, National Institute of Infectious Diseases, Tokyo, Japan
| | - T Nakagomi
- Department of Hygiene and Molecular Epidemiology, Graduate School of Biomedical Sciences, Nagasaki University, 1-12-4 Sakamoto, Nagasaki, 852-8523, Japan
| | - M Kaneko
- Department of Hygiene and Molecular Epidemiology, Graduate School of Biomedical Sciences, Nagasaki University, 1-12-4 Sakamoto, Nagasaki, 852-8523, Japan
| | - P Gauchan
- Department of Hygiene and Molecular Epidemiology, Graduate School of Biomedical Sciences, Nagasaki University, 1-12-4 Sakamoto, Nagasaki, 852-8523, Japan
| | - C T Ngo
- National Institute of Hygiene and Epidemiology, Hanoi, Vietnam
| | - M B Nguyen
- National Institute of Hygiene and Epidemiology, Hanoi, Vietnam
| | - T Yamashiro
- Institute of Tropical Medicine, Nagasaki University, Nagasaki, Japan
| | - A D Dang
- National Institute of Hygiene and Epidemiology, Hanoi, Vietnam
| | - O Nakagomi
- Department of Hygiene and Molecular Epidemiology, Graduate School of Biomedical Sciences, Nagasaki University, 1-12-4 Sakamoto, Nagasaki, 852-8523, Japan.
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Abdel-Moneim AS, Al-Malky MIR, Alsulaimani AAA, Abuelsaad ASA, Mohamed I, Ismail AK. Sequence Diversity of VP4 and VP7 Genes of Human Rotavirus Strains in Saudi Arabia. Foodborne Pathog Dis 2015; 12:937-44. [PMID: 26356200 DOI: 10.1089/fpd.2015.1990] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022] Open
Abstract
Group A rotavirus is responsible for inducing severe diarrhea in young children worldwide. Rotavirus vaccines are used to control the disease in many countries. In the current study, the sequences of human rotavirus G and P types in Saudi Arabia are reported and compared to different relevant published sequences. In addition, the VP4 and VP7 genes of the G1P[8] strains are compared to different antigenic epitopes of the rotavirus vaccines. Stool samples were collected from children under 2 years suffering from severe diarrhea. Screening of the rotavirus-positive samples was performed with rapid antigen detection kit. RNA was amplified from rotavirus-positive samples by reverse transcriptase polymerase chain reaction assay for both VP4 and VP7 genes. Direct sequencing of the VP4 and VP7 genes was conducted and the obtained sequences were compared to each other and to the rotavirus vaccines. Both G1P[8] G1P[4] genotypes were detected. Phylogenetic analysis revealed that the detected strains belong to G1 lineage 1 and 2, P[8] lineage 3, and to P[4] lineage 5. Multiple amino acid substitutions were detected between the Saudi RVA strains and the commonly used vaccines. The current findings emphasize the importance of the continuous surveillance of the circulating rotavirus strains, which is crucial for monitoring virus evolution and helping in predicting the protection level afforded by rotavirus vaccines.
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Affiliation(s)
- Ahmed S Abdel-Moneim
- 1 College of Medicine, Taif University , Al-Taif, Saudi Arabia .,2 Department of Virology, Faculty of Veterinary Medicine, Beni-Suef University , Beni-Suef, Egypt
| | | | | | | | - Imad Mohamed
- 1 College of Medicine, Taif University , Al-Taif, Saudi Arabia
| | - Ayman K Ismail
- 1 College of Medicine, Taif University , Al-Taif, Saudi Arabia
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da Silva MFM, Rose TL, Gómez MM, Carvalho-Costa FA, Fialho AM, de Assis RMS, de Andrade JDSR, Volotão EDM, Leite JPG. G1P[8] species A rotavirus over 27 years--pre- and post-vaccination eras--in Brazil: full genomic constellation analysis and no evidence for selection pressure by Rotarix® vaccine. INFECTION GENETICS AND EVOLUTION 2015; 30:206-218. [PMID: 25562122 DOI: 10.1016/j.meegid.2014.12.030] [Citation(s) in RCA: 28] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/04/2014] [Revised: 11/28/2014] [Accepted: 12/24/2014] [Indexed: 12/26/2022]
Abstract
Epidemiological data on species A rotavirus (RVA) infections have demonstrated the genetic diversity of strains circulating worldwide. Many G and P genotype combinations have been described over the years, varying regionally and temporally, especially in developing countries. However, the most common G and P genotype combinations identified in RVA human strains worldwide are G1P[8], G2P[4], G3P[8], G4P[8] and G9P[8]. RVA genotype G1P[8] strains are responsible for more than 50% of child infections worldwide and component of the two vaccines (Rotarix® [RV1] and RotaTeq® [RV5]) licensed globally. For a better understanding of the evolutionary mechanisms of this genotype in Brazil, phylogenetic analyses based on the 11 RVA genome segments (genomic constellation) from 90 G1P[8] RVA strains collected in two eras - (i) pre-vaccination with RV1 (1996-February 2006); (ii) post-vaccination (March 2006-2013) - in different Brazilian states were performed. The results showed the Wa-like genomic constellation of the Brazilian G1P[8] strains with a I1-R1-C1-M1-A1-N1-T1-E1-H1 specificity, except for two strains (rj14055-07 and ba19030-10) that belong to a I1-R1-C1-M1-A1-N1-T3-E1-H1 genomic constellation, evidencing the occurrence of reassortment (Wa-like×AU-1-like) of the NSP3 gene. Reassortment events were also demonstrated between Brazilian G1P[8] strains and the RV1 vaccine strain in some genes in vaccinated and unvaccinated children. VP7 and VP8* antigenic site analysis showed that the amino acid substitutions observed in samples collected after the introduction of RV1 in Brazil were already detected in samples collected in the 1980s and 1990s, suggesting that mass Brazilian RV1 vaccination had no impact on the diversity observed inside antigenic sites for these two proteins.
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Affiliation(s)
- Marcelle Figueira Marques da Silva
- Laboratory of Comparative and Environmental Virology, Oswaldo Cruz Institute, Oswaldo Cruz Foundation (Fiocruz), Rio de Janeiro, RJ, Brazil.
| | - Tatiana Lundgren Rose
- Laboratory of Comparative and Environmental Virology, Oswaldo Cruz Institute, Oswaldo Cruz Foundation (Fiocruz), Rio de Janeiro, RJ, Brazil
| | - Mariela Martínez Gómez
- Laboratory of Comparative and Environmental Virology, Oswaldo Cruz Institute, Oswaldo Cruz Foundation (Fiocruz), Rio de Janeiro, RJ, Brazil
| | - Filipe Anibal Carvalho-Costa
- Laboratory of Comparative and Environmental Virology, Oswaldo Cruz Institute, Oswaldo Cruz Foundation (Fiocruz), Rio de Janeiro, RJ, Brazil
| | - Alexandre Madi Fialho
- Laboratory of Comparative and Environmental Virology, Oswaldo Cruz Institute, Oswaldo Cruz Foundation (Fiocruz), Rio de Janeiro, RJ, Brazil
| | - Rosane Maria Santos de Assis
- Laboratory of Comparative and Environmental Virology, Oswaldo Cruz Institute, Oswaldo Cruz Foundation (Fiocruz), Rio de Janeiro, RJ, Brazil
| | | | - Eduardo de Mello Volotão
- Laboratory of Comparative and Environmental Virology, Oswaldo Cruz Institute, Oswaldo Cruz Foundation (Fiocruz), Rio de Janeiro, RJ, Brazil
| | - José Paulo Gagliardi Leite
- Laboratory of Comparative and Environmental Virology, Oswaldo Cruz Institute, Oswaldo Cruz Foundation (Fiocruz), Rio de Janeiro, RJ, Brazil
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Magagula NB, Esona MD, Nyaga MM, Stucker KM, Halpin RA, Stockwell TB, Seheri ML, Steele AD, Wentworth DE, Mphahlele MJ. Whole genome analyses of G1P[8] rotavirus strains from vaccinated and non-vaccinated South African children presenting with diarrhea. J Med Virol 2014; 87:79-101. [PMID: 24841697 DOI: 10.1002/jmv.23971] [Citation(s) in RCA: 34] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 04/04/2014] [Indexed: 12/18/2022]
Abstract
Group A rotaviruses (RVAs) are the leading cause of severe gastroenteritis and eventually death among infants and young children worldwide, and disease prevention and management through vaccination is a public health priority. In August 2009, Rotarix™ was introduced in the South African Expanded Programme on Immunisation. As a result, substantial reductions in RVA disease burden have been reported among children younger than 5 years old. Rotavirus strain surveillance post-vaccination is crucial to, inter alia, monitor and study the evolution of vaccine escape strains. Here, full-genome sequence data for the 11 gene segments from 11 South African G1P[8] rotavirus strains were generated, including 5 strains collected from non-vaccinated children during the 2004-2009 rotavirus seasons and 6 strains collected from vaccinated children during the 2010 rotavirus season. These data were analyzed to gain insights into the overall genetic makeup and evolution of South African G1P[8] rotavirus strains and to compare their genetic backbones with those of common human Wa-like RVAs from other countries, as well as with the Rotarix™ and RotaTeq™ G1P[8] vaccine components. All 11 South African G1P[8] strains revealed a complete Wa-like genotype constellation of G1-P[8]-I1-R1-C1-M1-A1-N1-T1-E1-H1. On the basis of sequence similarities, the South African G1P[8] strains (with the exception of strain RVA/Human-wt/ZAF/1262/2004/G1P[8]) were closely related to each other (96-100% identity in all gene segments). Comparison to the Rotarix™ and RotaTeq™ G1P[8] vaccine components revealed a moderate nucleotide identity of 89-96% and 93-95%, respectively. The results indicated that none of the gene segments of these 11 South African G1P[8] strains were vaccine-derived. This study illustrates that large-scale next generation sequencing will provide crucial information on the influence of the vaccination program on evolution of rotavirus strains. This is the first report to describe full genomic analyses of G1P[8] RVA strains collected from both non-vaccinated and vaccinated children in South Africa.
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Affiliation(s)
- Nonkululeko B Magagula
- Medical Research Council/Diarrhoeal Pathogens Research Unit, Department of Virology, University of Limpopo, Medunsa Campus/National Health Laboratory Service, Pretoria, South Africa
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Than VT, Kim W. Prevalence of rotavirus genotypes in South Korea in 1989-2009: implications for a nationwide rotavirus vaccine program. KOREAN JOURNAL OF PEDIATRICS 2013; 56:465-73. [PMID: 24348658 PMCID: PMC3859878 DOI: 10.3345/kjp.2013.56.11.465] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 04/23/2013] [Accepted: 08/18/2013] [Indexed: 01/12/2023]
Abstract
The epidemiology of human group A rotavirus was analyzed by examining genotypic data acquired from 1989 to 2009 in South Korea. This information was derived from all the available published articles on rotavirus studies in South Korea, retrieved from both the PubMed and KoreaMed databases. Four common G types (G1, G2, G3, and G4) and three common P types (P[8], P[4], and P[6]) accounted for approximately 93% and 99% of the rotavirus reports, respectively. The G9 type was frequently detected after 2000, and because of this prevalence, it is considered to be the fifth most important G type rotavirus after the G1.G4 genotypes. Less common G types of the virus such as G12, G11, and G10 were detected in some geographic settings, and it is important to consider the context of these subtypes and their epidemiological significance. The P[9] virus genotype was observed in the study and has been discussed in many other studies; however, the P[3], P[10] and P[25] genotypes were rarely detected in the epidemiological research. In general, the distributions of the G and P genotypes showed temporal and geographical fluctuations, and a nationwide rotavirus vaccine program that targeted these genotypes demonstrated effectiveness in protecting against the circulating rotavirus strains. However, further analysis is needed to determine the true long-term effectiveness of these vaccines; the analysis should also consider the unexpected effects of vaccinations, such as vaccine-induced diseases, herd immunity, and changes in host susceptibilities.
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Affiliation(s)
- Van Thai Than
- Department of Microbiology, Research Center for Medical Sciences, Chung-Ang University College of Medicine, Seoul, Korea
| | - Wonyong Kim
- Department of Microbiology, Research Center for Medical Sciences, Chung-Ang University College of Medicine, Seoul, Korea
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18
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Oh HK, Hong SH, Ahn BY, Min HK. Phylogenetic Analysis of the Rotavirus Genotypes Originated from Children < 5 Years of Age in 16 Cities in South Korea, between 2000 and 2004. Osong Public Health Res Perspect 2013; 3:36-42. [PMID: 24159485 PMCID: PMC3738675 DOI: 10.1016/j.phrp.2012.01.006] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/08/2011] [Revised: 01/15/2012] [Accepted: 01/20/2012] [Indexed: 11/16/2022] Open
Abstract
Objectives The purpose of this study was to examine the diversity of the G and P types of human rotavirus strains isolated in South Korea during 2000 to 2004. Methods We selected 38 Group A rotavirus isolates among 652 fecal samples, which were collected from infants and children < 5 years of age with acute gastroenteritis or diarrhea admitted in 8 hospitals representative of five provinces of South Korea between 2000 and 2004. Rotavirus P- and G-genotypes were determined by nucleotide sequencing and phylogenetic analysis was performed. Results One G1P[4] consisted G1-Id-P[4]-V; one G1P[6] consisted G1-Id-P[6]-Ia; nine G1P[8] consisted G1-Ib-P[8]-Ia (n=3), G1-Ic-P[8]-Ia (n=1), and G1-Id-P[8]-Ia (n=5); 13 G2P[4] consisted G2-V-P[4]-V; two G3P[4] consisted G3-IIId-P[4]-V; five G3P[8] consisted G3-IIId-P[8]-Ia; four G4P[6] consisted G4-Ie-P[6]-Ia; two G4P[8] consisted G4-Ie-P[8]-II; one G9P[6] consisted G9-III-P[6]-Ia. Conclusions A considerable amount of rotavirus genotypic diversity was detected in South Korea from 2000 to 2004. These findings are important to develop the effective vaccines and to undertake epidemiologic studies.
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Affiliation(s)
- Ho-Kyung Oh
- National Center for Lot Release, National Institute of Food & Drug Safety Evaluation, Korea Food & Drug Administration, Osong, Korea. ; School of Life Sciences and Biotechnology, Korea University, Seoul, Korea
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Hemming M, Vesikari T. Genetic diversity of G1P[8] rotavirus VP7 and VP8* antigens in Finland over a 20-year period: No evidence for selection pressure by universal mass vaccination with RotaTeq® vaccine. INFECTION GENETICS AND EVOLUTION 2013; 19:51-8. [PMID: 23831933 DOI: 10.1016/j.meegid.2013.06.026] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/21/2013] [Revised: 06/20/2013] [Accepted: 06/25/2013] [Indexed: 12/13/2022]
Abstract
Two live-attenuated oral vaccines (Rotarix™ and Rotateq®) against rotavirus gastroenteritis were licensed in 2006 and have been introduced into National Immunization Programs (NIPs) of several countries. Large scale use of rotavirus vaccines might cause antigenic pressure on circulating rotavirus types or lead to selection of new rotaviruses thus decreasing vaccine efficacy. We examined the nucleotide and amino acid sequences of the surface proteins VP7 and VP4 (cleaved to VP8(*) and VP5(*)) of a total of 108 G1P[8] rotavirus strains collected over a 20-year period from 1992, including the years 2006-2009 when rotavirus vaccine (mainly Rotarix™) was available, and the years 2009-2012 after implementation of RotaTeq® vaccine into the NIP of Finland. In G1 VP7 no changes at amino acid level were observed. In VP8(*) periodical fluctuation of the sublineage over the study period was found with multiple changes both at nucleotide and amino acid levels. Most amino acid changes were in the dominant antigenic epitopes of VP8(*). A change in VP8(*) sublineage occurred between 2008 and 2009, with a temporal correlation to the use of Rotarix™ up to 30% coverage in the period. In contrast, no antigenic changes in the VP8(*) protein appeared to be correlated to the exclusive use of RotaTeq® vaccine after 2009. Nevertheless, long-term surveillance of antigenic changes in VP4 and also VP7 proteins in wild-type rotavirus strains is warranted in countries with large scale use of the currently licensed live oral rotavirus vaccines.
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Affiliation(s)
- Maria Hemming
- Vaccine Research Center, University of Tampere, Tampere, Finland.
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20
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Barril P, Martínez L, Giordano M, Masachessi G, Isa M, Pavan J, Glikmann G, Nates S. Genetic and antigenic evolution profiles of G1 rotaviruses in córdoba, Argentina, during a 27-year period (1980-2006). J Med Virol 2012; 85:363-9. [DOI: 10.1002/jmv.23462] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 10/09/2012] [Indexed: 11/09/2022]
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21
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Than VT, Kang H, Lim I, Kim W. Molecular characterization of serotype G9 rotaviruses circulating in South Korea between 2005 and 2010. J Med Virol 2012; 85:171-8. [DOI: 10.1002/jmv.23436] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
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22
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Cho MK, Jheong WH, Lee SG, Park CJ, Jung KH, Paik SY. Full genomic analysis of a human rotavirus G1P[8] strain isolated in South Korea. J Med Virol 2012; 85:157-70. [PMID: 23023979 DOI: 10.1002/jmv.23366] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 06/06/2012] [Indexed: 11/07/2022]
Abstract
A rotavirus G1P[8] strain C1-81 was isolated from a 5-month-old female infant admitted to hospital with fever and severe diarrhea in Incheon, South Korea. To investigate its full genomic relatedness and its group, the full genome of strain C1-81 was determined. Based on a full genome classification system, C1-81 was shown to possess the typical Wa-like genotype constellation: G1-P[8]-I1-R1-C1-M1-A1-N1-T1-E1-H1. On the basis of sequence similarities, the strain was shown to be the closest related strain to contemporary human rotavirus strains with recent strains isolated in Asia. This C1-81 strain showed the highest degree of nucleic acid similarity (98.8% and 97%) to G1 B4633-03 and P[8] (Thai-1604 and Dhaka8-02), respectively. This is the first report that group A rotavirus was analyzed with G1P[8] in South Korea. The study of the complete genome of the virus will help understanding of the evolution of rotavirus.
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Affiliation(s)
- Min-Kyu Cho
- Department of Microbiology, College of Medicine, The Catholic University of Korea, Seoul, Republic of Korea
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23
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Novikova NA, Morozova OV, Fedorova OF, Epifanova NV, Sashina TA, Efimov EI. Rotavirus infection in children of Nizhny Novgorod, Russia: the gradual change of the virus allele from P[8]-1 to P[8]-3 in the period 1984–2010. Arch Virol 2012; 157:2405-9. [DOI: 10.1007/s00705-012-1426-4] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/25/2012] [Accepted: 06/13/2012] [Indexed: 11/28/2022]
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24
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Tatte VS, Chitambar SD. Diversity in the VP7 encoding genes of rotavirus strains isolated from adolescent and adult cases of acute gastroenteritis. J Med Virol 2012; 84:1481-8. [DOI: 10.1002/jmv.23311] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/30/2023]
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25
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Nagaoka Y, Tatsumi M, Tsugawa T, Yoto Y, Tsutsumi H. Phylogenetic and computational structural analysis of VP7 gene of group a human rotavirus G1P[8] strains obtained in Sapporo, Japan from 1987 to 2000. J Med Virol 2012; 84:832-8. [PMID: 22431033 DOI: 10.1002/jmv.23247] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/04/2023]
Abstract
Many studies indicate that G1P[8] genotypes are the most prevalent rotavirus strains worldwide. Although two vaccines have been licensed and their value proven in many countries, continuous surveillance for genetic evolution of circulating rotavirus strains before and after the introduction of the vaccines is desirable. G and P typing were carried out on all field strains isolated during 1987-2000 in Sapporo, Japan. Phylogenetic analysis for the VP7 gene of rotavirus G1P[8] strains was performed. Amino acid substitutions were mapped on the predicted three-dimensional VP7 protein image. G1P[8] genotype predominated. One hundred thirteen strains with G1P[8] genotype were analyzed. Phylogenetic studies of the VP7 gene classified these strains into three lineages. The mean estimated substitution rate was 7.25 × 10(-4) nucleotide substitutions per site per year. One predominant lineage contained the mutant strains which had VP7 amino acid substitutions at residue 91 and 212 that is in the neutralization domains. They were estimated to locate in or near intersubunit boundary of VP7 trimer. It is suggested that the most prevalent G1P[8] lineage strains in Sapporo obtained some survival advantages by changing the neutralization domains of VP7.
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Affiliation(s)
- Yoshinobu Nagaoka
- Department of Pediatrics, Sapporo Medical University School of Medicine, Sapporo, Japan.
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26
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Trang NV, Yamashiro T, Anh LTK, Hau VTB, Luan LT, Anh DD. Genetic variation in the VP7 gene of rotavirus G1P[8] strains isolated in Vietnam, 1998-2009. Virus Res 2012; 165:190-6. [PMID: 22387966 DOI: 10.1016/j.virusres.2012.02.015] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/17/2011] [Revised: 02/07/2012] [Accepted: 02/16/2012] [Indexed: 11/17/2022]
Abstract
Group A rotavirus genotype G1P[8] is the most common strain affecting humans around the world over the past few decades. In this study, we examined genetic variation in the VP7 gene of rotavirus G1P[8] strains, detected in children of four major cities of Vietnam during three different rotavirus seasons: 1998-1999, 2007-2008 and 2008-2009 in order to assess the evolution of the virus over 11 years. Fecal samples (n=73) from children hospitalized for gastroenteritis caused by G1P[8] rotavirus were analyzed by DNA sequencing of gene 9 encoding the VP7 capsid protein. Phylogenetic analyses indicated that VP7 gene of the G1 strains from 1999 contained a lineage I, while rotaviruses from 2009 clustered in lineage II. Both of these lineages were found co-circulating in 2007-2008 season. While different sublineages of lineage I and II co-circulated in the 1998-1999 and 2007-2008 seasons, almost all strains in 2009 belonged to sub-lineage II-C. In the analysis using selected 10 strains, the VP4 genes of these 2 VP7-G1 lineages were all grouped in F45-like cluster. Deduced amino acid analyses indicated that there were thirteen amino acid substitutions between strains of two lineages. Of those, two were found in antigenic regions A and C, implying possible antigenic differences between these two lineages. The G1P[8] strains in Vietnam are very genetically diverse and dynamic, implying the frequent monitoring on evolution of rotavirus will be important to assess efficacy of rotavirus vaccine in Vietnam.
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Affiliation(s)
- Nguyen Van Trang
- The National Institute of Hygiene and Epidemiology, Ha Noi, Viet Nam
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27
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Shin JW, Le VP, Than VT, Lim I, Yoon Y, Kim K, Chung SI, Myung SC, Kim W. Genomic characterization of a cell-culture-adapted Korean human G9P[8] rotavirus, CAU05-202. Arch Virol 2012; 157:753-9. [DOI: 10.1007/s00705-012-1232-z] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/05/2011] [Accepted: 12/13/2011] [Indexed: 11/29/2022]
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28
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Soares LDS, Lobo PDS, Mascarenhas JDP, Neri DL, Guerra SDFDS, de Oliveira ADSL, Maestri RP, Oliveira DDS, de Menezes EMDFC, Linhares ADC. Identification of lineage III of G12 rotavirus strains in diarrheic children in the Northern Region of Brazil between 2008 and 2010. Arch Virol 2011; 157:135-9. [PMID: 21947565 DOI: 10.1007/s00705-011-1111-z] [Citation(s) in RCA: 23] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/23/2011] [Accepted: 09/09/2011] [Indexed: 01/09/2023]
Abstract
This study reports on the surveillance for rotavirus genotypes and the identification of G12 human rotavirus in the Northern Region of Brazil. Rotavirus-positive samples were collected from children <5 years of age with acute diarrhea from January 2008 to October 2010. G2P[4] was the most prevalent genotype, accounting for 45.6% (126/303) of cases. Five rotavirus strains bearing G12P[6] genotype specificity were detected. Phylogenetic analysis of the VP7 gene showed that G12 strains clustered into lineage III. This is the first detection of G12 strains from lineage III in Latin America, broadening the current evidence for the worldwide emergence of this genotype.
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Affiliation(s)
- Luana da Silva Soares
- Seção de Virologia, Instituto Evandro Chagas, Secretaria de Vigilância em Saúde, Ministério da Saúde, Rodovia BR 316-KM 07, S/N, Levilândia, 67.030-000 Ananindeua, Pará, Brasil.
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Sequence analysis of VP4 genes of wild type and culture adapted human rotavirus G1P[8] strains. ASIAN PAC J TROP MED 2011; 4:541-6. [DOI: 10.1016/s1995-7645(11)60142-9] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/29/2010] [Revised: 04/27/2011] [Accepted: 05/15/2011] [Indexed: 11/19/2022] Open
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30
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Full genomic analysis of Indian G1P[8] rotavirus strains. INFECTION GENETICS AND EVOLUTION 2011; 11:504-11. [DOI: 10.1016/j.meegid.2011.01.005] [Citation(s) in RCA: 32] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/19/2010] [Revised: 12/27/2010] [Accepted: 01/04/2011] [Indexed: 01/05/2023]
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31
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Than VT, Le VP, Lim I, Kim W. Complete genomic characterization of cell culture adapted human G12P[6] rotaviruses isolated from South Korea. Virus Genes 2011; 42:317-22. [DOI: 10.1007/s11262-011-0576-x] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/11/2010] [Accepted: 01/17/2011] [Indexed: 01/24/2023]
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32
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Molecular characterization of rare G12P[6] rotavirus isolates closely related to G12 strains from the United States, CAU 195 and CAU 214. Arch Virol 2010; 156:511-6. [PMID: 21132336 DOI: 10.1007/s00705-010-0865-z] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/07/2010] [Accepted: 11/13/2010] [Indexed: 01/28/2023]
Abstract
Two human G12 rotaviruses, CAU 195 and CAU 214, were isolated from South Korea using cell culture and characterized on the basis of sequence divergence in the VP7, VP4, and NSP4 genes. Phylogenetic analysis of the VP7 gene sequences indicated that these strains clustered into lineage III and were most closely related to G12 rotaviruses isolated in the United States. The VP4 and NSP4 gene sequences showed that two strains belonged to the P[6]-Ia lineage and genotype [B]. This finding provides information that can be used to evaluate G12 strains and aid in the development of effective vaccines in the future.
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33
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Han TH, Kim CH, Chung JY, Park SH, Hwang ES. Genetic characterization of rotavirus in children in South Korea from 2007 to 2009. Arch Virol 2010; 155:1663-73. [PMID: 20625775 DOI: 10.1007/s00705-010-0752-7] [Citation(s) in RCA: 26] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/20/2010] [Accepted: 07/05/2010] [Indexed: 01/14/2023]
Abstract
Rotavirus is the most important etiological agent in children with acute gastroenteritis (AGE). The recent implementation of a rotavirus vaccine in Korea requires the monitoring of prevailing rotavirus strains in order to control the infection. One hundred thirty-nine rotavirus strains were detected in children hospitalized with AGE in Seoul, Korea from 2007 to 2009. The most frequent combination of genotypes was G9P[8] (32.1%), followed by G1P[8] (20.7%) and G3P[8] (11.7%). Mixed G-types were detected in 14 samples (10.0%), and mixed P-types were found in six samples (4.3%). G9 genotypes were predominant from 2007 to 2008, whereas G1 and G3 genotypes were predominant from 2008 to 2009. G1 strains clustered mostly in the Id lineage, and some clustered in the Ic, IId, and Ia lineages. G2 strains clustered in the IV and V lineages. G3 and G9 strains clustered in the IIId and Id lineages, respectively. This study shows a rapid change of the prevalent genotype from G9 to G1 and G3 genotypes, suggesting that continuous surveillance of rotavirus strains is important for rotavirus vaccination.
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Affiliation(s)
- Tae-Hee Han
- Department of Laboratory Medicine, Sanggyepaik Hospital, Inje University College of Medicine, Seoul, Korea
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