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Sharma AD, Grewal RK, Gorle S, Cuspoca AF, Kaushik V, Rajjak Shaikh A, Cavallo L, Chawla M. T cell epitope based vaccine design while targeting outer capsid proteins of rotavirus strains infecting neonates: an immunoinformatics approach. J Biomol Struct Dyn 2024; 42:4937-4955. [PMID: 37382214 DOI: 10.1080/07391102.2023.2226721] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/23/2023] [Accepted: 06/05/2023] [Indexed: 06/30/2023]
Abstract
Gastrointestinal diarrhea is majorly caused by the rotavirus (RV) in the children who generally are under the age group of 5 years. WHO estimates that ∼95% of the children contract RV infection, by this age. The disease is highly contagious; notably in many cases, it is proven fatal with high mortality rates especially in the developing countries. In India alone, an estimated 145,000 yearly deaths occurs due to RV related gastrointestinal diarrhea. WHO pre-qualified vaccines that are available for RV are all live attenuated vaccines with modest efficacy range between 40 and 60%. Further, the risk of intussusceptions has been reported in some children on RV vaccination. Thus, in a quest to develop alternative candidate to overcome challenges associated with these oral vaccines, we chose immunoinformatics approach to design a multi-epitope vaccine (MEV) while targeting the outer capsid viral proteinsVP4 and VP7 of the neonatal strains of rotavirus. Interestingly, ten epitopes, that is, six CD8+T-cells and four CD4+T-cell epitopes were identified which were predicted to be antigenic, non-allergic, non-toxic and stable. These epitopes were then linked to adjuvants, linkers, and PADRE sequences to create a multi-epitope vaccine for RV. The in silico designed RV-MEV and human TLR5 complex displayed stable interactions during molecular dynamics simulations. Further, the immune simulation studies of RV-MEV corroborated that the vaccine candidate emerges as a promising immunogen. Future investigations while performing in vitro and in vivo analyses with designed RV-MEV construct are highly desirable to warrant the potential of this vaccine candidate in protective immunity against different strains of RVs infecting neonates.Communicated by Ramaswamy H. Sarma.
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Affiliation(s)
- Arijit Das Sharma
- School of Bio-Engineering and Bio-Sciences, Lovely Professional University, Punjab, India
| | - Ravneet Kaur Grewal
- Department of Research and Innovation, STEMskills Research and Education Lab Private Limited, Faridabad, Haryana, India
| | - Suresh Gorle
- Department of Research and Innovation, STEMskills Research and Education Lab Private Limited, Faridabad, Haryana, India
| | - Andrés Felipe Cuspoca
- Grupo de Investigación Epidemiología Clínica de Colombia (GRECO), Universidad Pedagógica y Tecnológica de Colombia, Tunja, Colombia
- Centro de Atención e Investigación Médica - CAIMED, Chía, Colombia
| | - Vikas Kaushik
- School of Bio-Engineering and Bio-Sciences, Lovely Professional University, Punjab, India
| | - Abdul Rajjak Shaikh
- Department of Research and Innovation, STEMskills Research and Education Lab Private Limited, Faridabad, Haryana, India
| | - Luigi Cavallo
- Physical Sciences and Engineering Division, Kaust Catalysis Center, King Abdullah University of Science and Technology (KAUST), Thuwal, Saudi Arabia
| | - Mohit Chawla
- Physical Sciences and Engineering Division, Kaust Catalysis Center, King Abdullah University of Science and Technology (KAUST), Thuwal, Saudi Arabia
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Abraham D, Premkumar PS, Platts-Mills JA, Tewari T, Bhat N, Rajendiran R, Gunalan H, Kang G. Effect of Non-Rotavirus Enteric Infections on Vaccine Efficacy in a ROTASIIL Clinical Trial. Am J Trop Med Hyg 2024; 110:1201-1209. [PMID: 38626750 PMCID: PMC11154053 DOI: 10.4269/ajtmh.23-0348] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/28/2023] [Accepted: 01/14/2024] [Indexed: 04/18/2024] Open
Abstract
This study examined the relative proportion of enteric pathogens associated with severe gastroenteritis (GE) among children younger than 2 years in a phase III efficacy trial of the ROTASIIL® vaccine in India, evaluated the impact of co-infections on vaccine efficacy (VE), and characterized the association between specific pathogens and the clinical profile of severe GE. Stored stool samples collected from cases of severe GE in the phase III trial were tested by quantitative polymerase chain reaction using TaqMan™ Array Cards. Etiology was attributed by calculating the adjusted attributable fraction (AF) for each pathogen. A test-negative design was used to estimate VE. The pathogens with the highest AFs for severe diarrhea were rotavirus (23.5%), adenovirus 40/41 (17.0%), Shigella spp./enteroinvasive Escherichia coli, norovirus GII, enterotoxigenic E. coli, and Cryptosporidium spp. A considerable proportion of the disease in these children could not be explained by the pathogens tested. Severe GE cases associated with rotavirus and Shigella spp. were more likely to have a longer duration of vomiting and diarrhea, respectively. Cases attributed to Cryptosporidium spp. were more severe and required hospitalization. In the intention-to-treat population, VE was estimated to be 43.9% before and 46.5% after adjustment for co-infections; in the per-protocol population, VE was 46.7% before and 49.1% after adjustments. Rotavirus continued to be the leading cause of severe GE in this age group. The adjusted VE estimates obtained did not support co-infections as a major cause of lower vaccine performance in low- and middle-income countries.
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Affiliation(s)
- Dilip Abraham
- The Wellcome Trust Research Laboratory, Division of Gastrointestinal Sciences, Christian Medical College, Vellore, India
| | - Prasanna Samuel Premkumar
- The Wellcome Trust Research Laboratory, Division of Gastrointestinal Sciences, Christian Medical College, Vellore, India
| | - James A. Platts-Mills
- Infectious Diseases and International Health, University of Virginia, Charlottsville, Virginia
| | - Tushar Tewari
- Center for Vaccine Innovation and Access, PATH, New Delhi, India
| | - Niranjan Bhat
- Center for Innovation and Access, PATH, Washington, District of Columbia
| | - Revathi Rajendiran
- The Wellcome Trust Research Laboratory, Division of Gastrointestinal Sciences, Christian Medical College, Vellore, India
| | - Hemavathi Gunalan
- The Wellcome Trust Research Laboratory, Division of Gastrointestinal Sciences, Christian Medical College, Vellore, India
| | - Gagandeep Kang
- The Wellcome Trust Research Laboratory, Division of Gastrointestinal Sciences, Christian Medical College, Vellore, India
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Mansour Ghanaiee R, Fallah T, Karimi A, Sedighi I, Tariverdi M, Nazari T, Nahanmoghaddam N, Sedighi P, Nateghian A, Amirali A, Monavari SH, Fallahi M, Zahraei SM, Mahmoudi S, Elikaei A, Alebouyeh M. Multicenter Study of Rotavirus Infection, Diversity of Circulating Genotypes and Clinical Outcomes in Children ≤5 Years Old in Iran. Pediatr Infect Dis J 2024; 43:320-327. [PMID: 38190647 DOI: 10.1097/inf.0000000000004231] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/10/2024]
Abstract
BACKGROUND To determine the epidemiology of rotavirus group A (RVA) infection in symptomatic children, and analyze genotype diversity in association with clinical characteristics, geographical and seasonal changes. METHODS The stool samples of symptomatic children 5≥ years old were collected from 5 different hospitals during December 2020 and March 2022. Rotavirus stool antigen test was done and G and P genotypes of the positive samples were determined. Associations of the infection and genotype diversity with demographical and clinical data were assessed by statistical methods. RESULTS RVA infection was detected in 32.1% (300/934) of the patients (Ranges between 28.4% and 47.4%). An inverse association with age was detected, where the highest frequency was measured in children ≤12 months of age (175/482, 36.3%). The infection was more frequent during winter (124/284, 43.7%) and spring (64/187, 34.2%). Children who were exclusively fed with breast milk showed a lower rate of infection (72/251, 28.6%). Among the 46 characterized genotypes (17 single- and 29 mixed-genotype infections), G1P[8] and G9P[4] were more frequently detected in children <36 (67/234, 28.63%) and 36-60 (7/24, 29.16%) months of age children, respectively. A seasonal diversity in the circulating genotypes was detected in different cities. Children with G1P[8], G1P[6], and mixed-genotype infection experienced a shorter duration of hospitalization, and a higher frequency of nausea and severe diarrhea, respectively. CONCLUSIONS In this study high frequency of RVA infection was detected in symptomatic children in Iran. Moreover, genotype diversity according to geographic area, seasons, age groups, and clinical features of disease was detected.
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Affiliation(s)
- Roxana Mansour Ghanaiee
- From the Pediatric Infections Research Center, Research Institute for Children's Health, Shahid Beheshti University of Medical Sciences, Tehran, Iran
| | - Tina Fallah
- Department of Microbiology, Faculty of Biological Sciences, Alzahra University, Tehran, Iran
| | - Abdollah Karimi
- From the Pediatric Infections Research Center, Research Institute for Children's Health, Shahid Beheshti University of Medical Sciences, Tehran, Iran
- Department of Microbiology, Faculty of Biological Sciences, Alzahra University, Tehran, Iran
| | - Iraj Sedighi
- Department of Pediatrics, Faculty of Medicine, Hamedan University of Medical Sciences, Hamedan, Iran
| | - Marjan Tariverdi
- Department of Pediatrics, School of Medicine, Hormozgan University of Medical Sciences, Bandar Abbas, Iran
| | - Tayebe Nazari
- From the Pediatric Infections Research Center, Research Institute for Children's Health, Shahid Beheshti University of Medical Sciences, Tehran, Iran
| | - Negin Nahanmoghaddam
- Department of Pediatrics, Bouali Hospital Children's Hospital, School of Medicine, Ardabil University of Medical Sciences, Ardabil, Iran
| | - Parinaz Sedighi
- Student Research Committee, Hamadan University of Medical Sciences, Hamadan, Iran
- Universal Scientific Education and Research Network (USERN), Tehran, Iran
| | - Alireza Nateghian
- Department of Pediatrics, Ali Asghar Children's hospital, Iran University of Medical Sciences, Tehran, Iran
| | - Arezu Amirali
- From the Pediatric Infections Research Center, Research Institute for Children's Health, Shahid Beheshti University of Medical Sciences, Tehran, Iran
- Department of Microbiology, Faculty of Biological Sciences, Alzahra University, Tehran, Iran
| | - Seyed Hamidreza Monavari
- Department of Medical Virology, Faculty of Medicine, Iran University of Medical Sciences, Tehran, Iran
| | - Mahsa Fallahi
- Student Research Committee, Faculty of Medicine, Hormozgan University of Medical Sciences, Bandar Abbas, Iran
| | - Seyed Mohsen Zahraei
- Center for Communicable Diseases Control, Ministry of Health and Medical Education, Tehran, Iran
| | - Sussan Mahmoudi
- Center for Communicable Diseases Control, Ministry of Health and Medical Education, Tehran, Iran
| | - Ameneh Elikaei
- Department of Microbiology, Faculty of Biological Sciences, Alzahra University, Tehran, Iran
| | - Masoud Alebouyeh
- From the Pediatric Infections Research Center, Research Institute for Children's Health, Shahid Beheshti University of Medical Sciences, Tehran, Iran
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Khakha SA, Varghese T, Giri S, Durbin A, Tan GS, Kalaivanan M, Prasad JH, Kang G. Whole-genome characterization of common rotavirus strains circulating in Vellore, India from 2002 to 2017: emergence of non-classical genomic constellations. Gut Pathog 2023; 15:44. [PMID: 37730725 PMCID: PMC10510252 DOI: 10.1186/s13099-023-00569-6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/17/2023] [Accepted: 08/27/2023] [Indexed: 09/22/2023] Open
Abstract
Rotaviruses (RVs) are the most common etiological agent of acute gastroenteritis among young children, even after vaccine introduction in low-income countries. A whole-genome classification representing the 11 RV genes, was introduced for surveillance and characterization of RVs. This study characterized the common circulating strains in Vellore, India from 2002 to 2017 to understand rotavirus strain diversity and evolution using Whole genome sequencing (WGS) carried out on Illumina MiSeq. The 89% (92% of Wa-like, 86% of DS-1-like) of strains had classical constellations, while reassortant constellations were seen in 11% (8% of Wa-like, 14% of DS-1-like) of the strains. The rare E6-NSP4 in combination with DS-1 like G1P[8] and the emergence of the OP-354 subtype of P[8] were identified. Phylogenetics of RV strains revealed multiple subtypes circulating in the past 15 years, with strong evidence of animal to human gene transmission among several strains.
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Affiliation(s)
- Shainey Alokit Khakha
- The Wellcome Trust Research Laboratory, Division of Gastrointestinal Sciences, Christian Medical College, Vellore, India
| | - Tintu Varghese
- The Wellcome Trust Research Laboratory, Division of Gastrointestinal Sciences, Christian Medical College, Vellore, India
| | - Sidhartha Giri
- The Wellcome Trust Research Laboratory, Division of Gastrointestinal Sciences, Christian Medical College, Vellore, India
| | - Alan Durbin
- J. Craig Venter Institute, La Jolla, San Diego, CA, 92037, USA
| | - Gene S Tan
- J. Craig Venter Institute, La Jolla, San Diego, CA, 92037, USA
- Division of Infectious Diseases, Department of Medicine, University of California San Diego, La Jolla, San Diego, CA, 92037, USA
| | - Maheswari Kalaivanan
- The Wellcome Trust Research Laboratory, Division of Gastrointestinal Sciences, Christian Medical College, Vellore, India
| | | | - Gagandeep Kang
- The Wellcome Trust Research Laboratory, Division of Gastrointestinal Sciences, Christian Medical College, Vellore, India.
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5
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Dhalaria P, Kapur S, Singh AK, Verma A, Priyadarshini P, Taneja G. Potential impact of rotavirus vaccination on reduction of childhood diarrheal disease in India: An analysis of National Family Health Survey-5. Vaccine X 2023; 14:100319. [PMID: 37275272 PMCID: PMC10239013 DOI: 10.1016/j.jvacx.2023.100319] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/21/2023] [Revised: 05/20/2023] [Accepted: 05/22/2023] [Indexed: 06/07/2023] Open
Abstract
Rotavirus is one of the leading causes of diarrhea in infants and young children worldwide. In this study, we investigated the impact of rotavirus vaccination on the prevalence of diarrheal disease among children under five years of age in India. Research on the impact of the rotavirus vaccine on reducing diarrheal disease is therefore important in contributing to the growing body of evidence on the effectiveness of this intervention in improving child health outcomes. We adopted multivariate logistic regression and propensity score matching analysis to examine the association between diarrhea and the rotavirus vaccine. The bivariate analysis finding shows that the prevalence of diarrhea was remarkably higher (9.1%) among children who had not received rotavirus and the prevalence was 7.5%, 7.5%, and 7.2% among children who received one dose, two doses, and three rotavirus doses (all) respectively. The result of multivariate logistic regression shows that children who received all three doses of the rotavirus vaccine were 16% less likely to experience diarrhea compared to those who did not receive any rotavirus vaccine. Our analysis also found that the prevalence of diarrhea decreased significantly in the years following the introduction of the vaccine. The results of this study suggest that the rotavirus vaccine has a significant impact on reducing childhood diarrheal disease in India. These results have the potential to inform policy decisions and enable healthcare professionals to concert their efforts in reducing the diarrheal disease burden and its timely prevention in children. The study will also contribute to the existing literature on the impact of rotavirus vaccination in reducing the prevalence of diarrhea among children in India.
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Affiliation(s)
- Pritu Dhalaria
- Immunization Technical Support Unit, Ministry of Health & Family Welfare, Government of India, New Delhi 110070, India
| | | | - Ajeet Kumar Singh
- Immunization Technical Support Unit, Ministry of Health & Family Welfare, Government of India, New Delhi 110070, India
| | - Ajay Verma
- Banaras Hindu University, Varanasi, Uttar Pradesh 221005, India
| | - Pretty Priyadarshini
- Immunization Technical Support Unit, Ministry of Health & Family Welfare, Government of India, New Delhi 110070, India
| | - Gunjan Taneja
- Bill & Melinda Gates Foundation, New Delhi 110067, India
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6
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Manjate F, João ED, Mwangi P, Chirinda P, Mogotsi M, Messa A, Garrine M, Vubil D, Nobela N, Nhampossa T, Acácio S, Tate JE, Parashar U, Weldegebriel G, Mwenda JM, Alonso PL, Cunha C, Nyaga M, Mandomando I. Genomic characterization of the rotavirus G3P[8] strain in vaccinated children, reveals possible reassortment events between human and animal strains in Manhiça District, Mozambique. Front Microbiol 2023; 14:1193094. [PMID: 37342557 PMCID: PMC10277737 DOI: 10.3389/fmicb.2023.1193094] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/24/2023] [Accepted: 04/20/2023] [Indexed: 06/23/2023] Open
Abstract
Mozambique introduced the rotavirus vaccine (Rotarix®; GlaxoSmithKline Biologicals, Rixensart, Belgium) in 2015, and since then, the Centro de Investigação em Saúde de Manhiça has been monitoring its impact on rotavirus-associated diarrhea and the trend of circulating strains, where G3P[8] was reported as the predominant strain after the vaccine introduction. Genotype G3 is among the most commonly detected Rotavirus strains in humans and animals, and herein, we report on the whole genome constellation of G3P[8] detected in two children (aged 18 months old) hospitalized with moderate-to-severe diarrhea at the Manhiça District Hospital. The two strains had a typical Wa-like genome constellation (I1-R1-C1-M1-A1-N1-T1-E1-H1) and shared 100% nucleotide (nt) and amino acid (aa) identities in 10 gene segments, except for VP6. Phylogenetic analysis demonstrated that genome segments encoding VP7, VP6, VP1, NSP3, and NSP4 of the two strains clustered most closely with porcine, bovine, and equine strains with identities ranging from 86.9-99.9% nt and 97.2-100% aa. Moreover, they consistently formed distinct clusters with some G1P[8], G3P[8], G9P[8], G12P[6], and G12P[8] strains circulating from 2012 to 2019 in Africa (Mozambique, Kenya, Rwanda, and Malawi) and Asia (Japan, China, and India) in genome segments encoding six proteins (VP2, VP3, NSP1-NSP2, NSP5/6). The identification of segments exhibiting the closest relationships with animal strains shows significant diversity of rotavirus and suggests the possible occurrence of reassortment events between human and animal strains. This demonstrates the importance of applying next-generation sequencing to monitor and understand the evolutionary changes of strains and evaluate the impact of vaccines on strain diversity.
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Affiliation(s)
- Filomena Manjate
- Centro de Investigação em Saúde de Manhiça (CISM), Maputo, Mozambique
- Global Health and Tropical Medicine (GHTM), Instituto de Higiene e Medicina Tropical (IHMT), Universidade Nova de Lisboa (UNL), Lisbon, Portugal
| | - Eva D. João
- Centro de Investigação em Saúde de Manhiça (CISM), Maputo, Mozambique
| | - Peter Mwangi
- Next Generation Sequencing Unit and Division of Virology, Faculty of Health Sciences, University of the Free State, Bloemfontein, South Africa
| | - Percina Chirinda
- Centro de Investigação em Saúde de Manhiça (CISM), Maputo, Mozambique
| | - Milton Mogotsi
- Next Generation Sequencing Unit and Division of Virology, Faculty of Health Sciences, University of the Free State, Bloemfontein, South Africa
| | - Augusto Messa
- Centro de Investigação em Saúde de Manhiça (CISM), Maputo, Mozambique
| | - Marcelino Garrine
- Centro de Investigação em Saúde de Manhiça (CISM), Maputo, Mozambique
- Global Health and Tropical Medicine (GHTM), Instituto de Higiene e Medicina Tropical (IHMT), Universidade Nova de Lisboa (UNL), Lisbon, Portugal
| | - Delfino Vubil
- Centro de Investigação em Saúde de Manhiça (CISM), Maputo, Mozambique
| | - Nélio Nobela
- Centro de Investigação em Saúde de Manhiça (CISM), Maputo, Mozambique
| | - Tacilta Nhampossa
- Centro de Investigação em Saúde de Manhiça (CISM), Maputo, Mozambique
- Instituto Nacional de Saúde, Ministério da Saúde, Marracuene, Mozambique
| | - Sozinho Acácio
- Centro de Investigação em Saúde de Manhiça (CISM), Maputo, Mozambique
- Instituto Nacional de Saúde, Ministério da Saúde, Marracuene, Mozambique
| | - Jacqueline E. Tate
- Centers for Disease Control and Prevention (CDC), Atlanta, GA, United States
| | - Umesh Parashar
- Centers for Disease Control and Prevention (CDC), Atlanta, GA, United States
| | - Goitom Weldegebriel
- African Rotavirus Surveillance Network, Immunization, Vaccines, and Development Program, Regional Office for Africa, World Health Organization, Brazzaville, Democratic Republic of Congo
| | - Jason M. Mwenda
- African Rotavirus Surveillance Network, Immunization, Vaccines, and Development Program, Regional Office for Africa, World Health Organization, Brazzaville, Democratic Republic of Congo
| | - Pedro L. Alonso
- Centro de Investigação em Saúde de Manhiça (CISM), Maputo, Mozambique
- ISGlobal, Hospital Clínic, Universitat de Barcelona, Barcelona, Spain
| | - Celso Cunha
- Global Health and Tropical Medicine (GHTM), Instituto de Higiene e Medicina Tropical (IHMT), Universidade Nova de Lisboa (UNL), Lisbon, Portugal
| | - Martin Nyaga
- Next Generation Sequencing Unit and Division of Virology, Faculty of Health Sciences, University of the Free State, Bloemfontein, South Africa
| | - Inácio Mandomando
- Centro de Investigação em Saúde de Manhiça (CISM), Maputo, Mozambique
- Instituto Nacional de Saúde, Ministério da Saúde, Marracuene, Mozambique
- ISGlobal, Hospital Clínic, Universitat de Barcelona, Barcelona, Spain
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7
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Eugenia Afocha E, Abiodun Iwalokun B, Deji-Agboola MA, Ayorinde James B, Abayomi Banjo T, Adu F, Chukwujekwu Ezechi O, Adegbola R, Lawal Salako B. Prevalence and spatiotemporal distribution of rotavirus diarrhea among children younger than five years old in Lagos, Nigeria. J Immunoassay Immunochem 2023; 44:117-132. [PMID: 36576163 DOI: 10.1080/15321819.2022.2159430] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/29/2022]
Abstract
Data on spatiotemporal distribution of rotavirus diarrhea are limited in many endemic settings. This study determined the prevalence and seasonal distribution of rotavirus among Nigerian children with diarrhea. Here, a total of 406 fecal samples were collected from patients attending six health facilities in Lagos between January - December 2019. Socio-demographic data of each enrolled child were collected. Rotavirus VP6 antigen was detected by enzyme-linked immunoassay (ELISA) and confirmation by VP7 gene detection by reverse transcription polymerase-chain reaction. The overall rotavirus diarrhea prevalence was 16.3% by ELISA with children above 2 years having 29.2% of this prevalence and higher occurrence in females (59.1%) than males (40.9%) (P < .05). Rotavirus diarrhea diagnosis using RT-PCR showed 100% concordance with ELISA. Cases of rotavirus diarrhea were detected from March to July and from September to November with the highest number of cases detected in May and June (22.7% each), followed by July (21.2%). The prevalence of rotavirus diarrhea remains high in Lagos with an emerging higher disease activity in children above 2. A different rotavirus transmission dynamics compared to previous studies from Nigeria and other African countries was found. VP6 ELISA may reliably be used for continuous rotavirus surveillance in Nigeria.
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Affiliation(s)
- Ebelechukwu Eugenia Afocha
- Medical Microbiology & Parasitology Department, Olabisi Onabanjo University, Nigeria.,Centre for Infectious Disease Research, Microbiology Department, Nigerian Institute of Medical Research, Nigeria
| | - Bamidele Abiodun Iwalokun
- Medical Microbiology & Parasitology Department, Olabisi Onabanjo University, Nigeria.,Molecular Biology & Biotechnology Department, Nigerian Institute of Medical Research, Nigeria.,Central Research Laboratory Department, Nigerian Institute of Medical Research, Nigeria
| | | | | | - Taiwo Abayomi Banjo
- Medical Microbiology & Parasitology Department, Olabisi Onabanjo University, Nigeria
| | - Festus Adu
- All Saints University Medical School, Cnr Hillborough and Great George Street, Common Wealth of Dominica, West Indies
| | | | - Richard Adegbola
- Centre for Infectious Disease Research, Microbiology Department, Nigerian Institute of Medical Research, Nigeria
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8
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Omatola CA, Olaniran AO. Genetic heterogeneity of group A rotaviruses: a review of the evolutionary dynamics and implication on vaccination. Expert Rev Anti Infect Ther 2022; 20:1587-1602. [PMID: 36285575 DOI: 10.1080/14787210.2022.2139239] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/12/2023]
Abstract
INTRODUCTION Human rotavirus remains a major etiology of acute gastroenteritis among under 5-year children worldwide despite the availability of oral vaccines. The genetic instability of rotavirus and the ability to form different combinations from the different G- and P-types reshapes the antigenic landscape of emerging strains which often display limited or no antigen identities with the vaccine strain. As evidence also suggests, the selection of the antigenically distinct novel or rare strains and their successful spread in the human population has raised concerns regarding undermining the effectiveness of vaccination programs. AREAS COVERED We review aspects related to current knowledge about genetic and antigenic heterogeneity of rotavirus, the mechanism of genetic diversity and evolution, and the implication of genetic change on vaccination. EXPERT OPINION Genetic changes in the segmented genome of rotavirus can alter the antigenic landscape on the virion capsid and further promote viral fitness in a fully vaccinated population. Against this background, the potential risk of the appearance of new rotavirus strains over the long term would be better predicted by a continued and increased close monitoring of the variants across the globe to identify any change associated with disease dynamics.
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Affiliation(s)
- Cornelius A Omatola
- Discipline of Microbiology, School of Life Sciences, College of Agriculture, Engineering and Science, University of KwaZulu-Natal, Durban, Republic of South Africa
| | - Ademola O Olaniran
- Discipline of Microbiology, School of Life Sciences, College of Agriculture, Engineering and Science, University of KwaZulu-Natal, Durban, Republic of South Africa
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9
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Chen J, Grow S, Iturriza-Gómara M, Hausdorff WP, Fix A, Kirkwood CD. The Challenges and Opportunities of Next-Generation Rotavirus Vaccines: Summary of an Expert Meeting with Vaccine Developers. Viruses 2022; 14:v14112565. [PMID: 36423174 PMCID: PMC9699535 DOI: 10.3390/v14112565] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/05/2022] [Accepted: 11/08/2022] [Indexed: 11/22/2022] Open
Abstract
The 2nd Next Generation Rotavirus Vaccine Developers Meeting, sponsored by PATH and the Bill and Melinda Gates Foundation, was held in London, UK (7-8 June 2022), and attended by vaccine developers and researchers to discuss advancements in the development of next-generation rotavirus vaccines and to consider issues surrounding vaccine acceptability, introduction, and uptake. Presentations included updates on rotavirus disease burden, the impact of currently licensed oral vaccines, various platforms and approaches for next generation rotavirus vaccines, strategies for combination pediatric vaccines, and the value proposition for novel parenteral rotavirus vaccines. This report summarizes the information shared at the convening and poses various topics worthy of further exploration.
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Affiliation(s)
- Jessie Chen
- Enteric & Diarrheal Diseases, Bill & Melinda Gates Foundation, Seattle, WA 98109, USA
- Correspondence:
| | - Stephanie Grow
- Enteric & Diarrheal Diseases, Bill & Melinda Gates Foundation, Seattle, WA 98109, USA
| | | | - William P. Hausdorff
- Faculty of Medicine, Université Libre de Bruxelles, 1050 Brussels, Belgium
- PATH, Washington, DC 20001, USA
| | | | - Carl D. Kirkwood
- Enteric & Diarrheal Diseases, Bill & Melinda Gates Foundation, Seattle, WA 98109, USA
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10
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Mitra S, Lo M, Saha R, Deb AK, Debnath F, Miyoshi S, Dutta S, Chawla‐Sarkar M. Epidemiology of major entero‐pathogenic viruses and genetic characterization of Group A rotaviruses among children (≤5 years) with acute gastroenteritis in eastern India, 2018‐2020. J Appl Microbiol 2022; 133:758-783. [DOI: 10.1111/jam.15594] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/07/2022] [Revised: 04/19/2022] [Accepted: 04/20/2022] [Indexed: 11/28/2022]
Affiliation(s)
- Suvrotoa Mitra
- Division of Virology, ICMR‐National Institute of Cholera and Enteric Diseases, P‐33, C.I.T. Road, Scheme‐XM, Beliaghata Kolkata India
| | - Mahadeb Lo
- Division of Virology, ICMR‐National Institute of Cholera and Enteric Diseases, P‐33, C.I.T. Road, Scheme‐XM, Beliaghata Kolkata India
| | - Ritubrita Saha
- Division of Virology, ICMR‐National Institute of Cholera and Enteric Diseases, P‐33, C.I.T. Road, Scheme‐XM, Beliaghata Kolkata India
| | - Alok K. Deb
- Division of Epidemiology, ICMR‐National Institute of Cholera and Enteric Diseases, P‐33, C.I.T. Road Scheme‐XM, Beliaghata Kolkata India
| | - Falguni Debnath
- Division of Epidemiology, ICMR‐National Institute of Cholera and Enteric Diseases, P‐33, C.I.T. Road Scheme‐XM, Beliaghata Kolkata India
| | - Shin‐Ichi Miyoshi
- Graduate School of Medicine, Dentistry and Pharmaceutical Sciences Okayama University Okayama Japan
- Collaborative Research Centre of Okayama University for Infectious Disease ICMR‐National Institute of Cholera and Enteric Diseases, P‐33, C.I.T. Road Scheme‐XM, Beliaghata Kolkata India
| | - Shanta Dutta
- Regional Virus Research and Diagnostic Laboratory, ICMR‐National Institute of Cholera and Enteric Diseases, P‐33, C.I.T. Road Scheme‐XM, Beliaghata Kolkata India
| | - Mamta Chawla‐Sarkar
- Division of Virology, ICMR‐National Institute of Cholera and Enteric Diseases, P‐33, C.I.T. Road, Scheme‐XM, Beliaghata Kolkata India
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11
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Impact of Vaccination on Rotavirus Genotype Diversity: A Nearly Two-Decade-Long Epidemiological Study before and after Rotavirus Vaccine Introduction in Sicily, Italy. Pathogens 2022; 11:pathogens11040424. [PMID: 35456099 PMCID: PMC9028787 DOI: 10.3390/pathogens11040424] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/07/2022] [Revised: 03/28/2022] [Accepted: 03/30/2022] [Indexed: 11/17/2022] Open
Abstract
Sicily was the first Italian region to introduce rotavirus (RV) vaccination with the monovalent G1P[8] vaccine Rotarix® in May 2012. In this study, the seasonal distribution and molecular characterization of RV strains detected over 19 years were compared to understand the effect of Rotarix® on the evolutionary dynamics of human RVs. A total of 7846 stool samples collected from children < 5 years of age, hospitalized with acute gastroenteritis, were tested for RV detection and genotyping. Since 2013, vaccine coverage has progressively increased, while the RV prevalence decreased from 36.1% to 13.3% with a loss of seasonality. The local distribution of RV genotypes changed over the time possibly due to vaccine introduction, with a drastic reduction in G1P[8] strains replaced by common and novel emerging RV strains, such as equine-like G3P[8] in the 2018−2019 season. Comparison of VP7 and VP4 amino acid (aa) sequences with the cognate genes of Rotarix® and RotaTeq® vaccine strains showed specific aa changes in the antigenic epitopes of VP7 and of the VP8* portion of VP4 of the Italian RV strains. Molecular epidemiological surveillance data are required to monitor the emergence of novel RV strains and ascertain if these strains may affect the efficacy of RV vaccines.
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12
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Understanding Rotavirus Vaccine Efficacy and Effectiveness in Countries with High Child Mortality. Vaccines (Basel) 2022; 10:vaccines10030346. [PMID: 35334978 PMCID: PMC8948967 DOI: 10.3390/vaccines10030346] [Citation(s) in RCA: 23] [Impact Index Per Article: 11.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/11/2022] [Revised: 02/16/2022] [Accepted: 02/19/2022] [Indexed: 02/01/2023] Open
Abstract
Rotavirus claims thousands of lives of children globally every year with a disproportionately high burden in low- and lower-middle income countries where access to health care is limited. Oral, live-attenuated rotavirus vaccines have been evaluated in multiple settings in both low- and high-income populations and have been shown to be safe and efficacious. However, the vaccine efficacy observed in low-income settings with high rotavirus and diarrheal mortality was significantly lower than that seen in high-income populations where rotavirus mortality is less common. Rotavirus vaccines have been introduced and rolled out in more than 112 countries, providing the opportunity to assess effectiveness of the vaccines in these different settings. We provide an overview of the efficacy, effectiveness, and impact of rotavirus vaccines, focusing on high-mortality settings and identify the knowledge gaps for future research. Despite lower efficacy, rotavirus vaccines substantially reduce diarrheal disease and mortality and are cost-effective in countries with high burden. Continued evaluation of the effectiveness, impact, and cost–benefit of rotavirus vaccines, especially the new candidates that have been recently approved for global use, is a key factor for new vaccine introductions in countries, or for a switch of vaccine product in countries with limited resources.
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13
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Manjate F, João ED, Chirinda P, Garrine M, Vubil D, Nobela N, Kotloff K, Nataro JP, Nhampossa T, Acácio S, Tate JE, Parashar U, Mwenda JM, Alonso PL, Nyaga M, Cunha C, Mandomando I. Molecular Epidemiology of Rotavirus Strains in Symptomatic and Asymptomatic Children in Manhiça District, Southern Mozambique 2008-2019. Viruses 2022; 14:v14010134. [PMID: 35062336 PMCID: PMC8781303 DOI: 10.3390/v14010134] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/01/2021] [Revised: 01/04/2022] [Accepted: 01/07/2022] [Indexed: 12/22/2022] Open
Abstract
Group A rotaviruses remain the leading cause of diarrhoea in children aged <5 years. Mozambique introduced rotavirus vaccine (Rotarix®) in September 2015. We report rotavirus genotypes circulating among symptomatic and asymptomatic children in Manhiça District, Mozambique, pre- and post-vaccine introduction. Stool was collected from enrolled children and screened for rotavirus by enzyme-immuno-sorbent assay. Positive specimens were genotyped for VP7 (G genotypes) and VP4 (P genotypes) by the conventional reverse transcriptase polymerase chain reaction. The combination G12P[8] was more frequently observed in pre-vaccine than in post-vaccine introduction, in moderate to severe diarrhoea (34%, 61/177 vs. 0, p < 0.0001) and controls (23%, 26/113 vs. 0, p = 0.0013) and mixed genotypes (36%, 24/67 vs. 7% 4/58, p = 0.0003) in less severe diarrhoea. We observed changes in post-vaccine compared to pre-vaccine introduction, where G3P[4] and G3P[8] were prevalent in moderate to severe diarrhoea (10%, 5/49 vs. 0, p = 0.0002; and 14%, 7/49 vs. 1%, 1/177, p < 0.0001; respectively), and in less severe diarrhoea (21%, 12/58 vs. 0, p = 0.003; and 24%, 14/58 vs. 0, p < 0.0001; respectively). Our surveillance demonstrated the circulation of similar genotypes contemporaneously among cases and controls, as well as switching from pre- to post-vaccine introduction. Continuous surveillance is needed to evaluate the dynamics of the changes in genotypes following vaccine introduction.
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Affiliation(s)
- Filomena Manjate
- Centro de Investigação em Saúde de Manhiça, Maputo 1929, Mozambique; (E.D.J.); (P.C.); (M.G.); (D.V.); (N.N.); (T.N.); (S.A.); (P.L.A.)
- Global Health and Tropical Medicine (GHTM), Instituto de Higiene e Medicina Tropical (IHMT), Universidade Nova de Lisboa, 1349-008 Lisbon, Portugal;
- Correspondence: (F.M.); (I.M.)
| | - Eva D. João
- Centro de Investigação em Saúde de Manhiça, Maputo 1929, Mozambique; (E.D.J.); (P.C.); (M.G.); (D.V.); (N.N.); (T.N.); (S.A.); (P.L.A.)
| | - Percina Chirinda
- Centro de Investigação em Saúde de Manhiça, Maputo 1929, Mozambique; (E.D.J.); (P.C.); (M.G.); (D.V.); (N.N.); (T.N.); (S.A.); (P.L.A.)
| | - Marcelino Garrine
- Centro de Investigação em Saúde de Manhiça, Maputo 1929, Mozambique; (E.D.J.); (P.C.); (M.G.); (D.V.); (N.N.); (T.N.); (S.A.); (P.L.A.)
- Global Health and Tropical Medicine (GHTM), Instituto de Higiene e Medicina Tropical (IHMT), Universidade Nova de Lisboa, 1349-008 Lisbon, Portugal;
| | - Delfino Vubil
- Centro de Investigação em Saúde de Manhiça, Maputo 1929, Mozambique; (E.D.J.); (P.C.); (M.G.); (D.V.); (N.N.); (T.N.); (S.A.); (P.L.A.)
| | - Nélio Nobela
- Centro de Investigação em Saúde de Manhiça, Maputo 1929, Mozambique; (E.D.J.); (P.C.); (M.G.); (D.V.); (N.N.); (T.N.); (S.A.); (P.L.A.)
| | - Karen Kotloff
- Center for Vaccine Development, University of Maryland School of Medicine, Baltimore, MD 21201, USA;
| | - James P. Nataro
- Department of Pediatrics, University of Virginia School of Medicine, Charlottesville, VA 22903, USA;
| | - Tacilta Nhampossa
- Centro de Investigação em Saúde de Manhiça, Maputo 1929, Mozambique; (E.D.J.); (P.C.); (M.G.); (D.V.); (N.N.); (T.N.); (S.A.); (P.L.A.)
- Instituto Nacional de Saúde, Ministério da Saúde, Marracuene 1120, Mozambique
| | - Sozinho Acácio
- Centro de Investigação em Saúde de Manhiça, Maputo 1929, Mozambique; (E.D.J.); (P.C.); (M.G.); (D.V.); (N.N.); (T.N.); (S.A.); (P.L.A.)
- Instituto Nacional de Saúde, Ministério da Saúde, Marracuene 1120, Mozambique
| | - Jacqueline E. Tate
- Centers for Disease Control and Prevention, Atlanta, GA 30333, USA; (J.E.T.); (U.P.)
| | - Umesh Parashar
- Centers for Disease Control and Prevention, Atlanta, GA 30333, USA; (J.E.T.); (U.P.)
| | - Jason M. Mwenda
- African Rotavirus Surveillance Network, Immunization, Vaccines and Development Program, World Health Organization, Regional Office for Africa, Brazzaville P.O. Box 2465, Congo;
| | - Pedro L. Alonso
- Centro de Investigação em Saúde de Manhiça, Maputo 1929, Mozambique; (E.D.J.); (P.C.); (M.G.); (D.V.); (N.N.); (T.N.); (S.A.); (P.L.A.)
- ISGlobal, Hospital Clínic, Universitat de Barcelona, 08036 Barcelona, Spain
- Global Malaria Program, World Health Organization, 1211 Geneva, Switzerland
| | - Martin Nyaga
- Next Generation Sequencing Unit and Division of Virology, Faculty of Health Sciences, University of the Free State, Bloemfontein 9300, South Africa;
| | - Celso Cunha
- Global Health and Tropical Medicine (GHTM), Instituto de Higiene e Medicina Tropical (IHMT), Universidade Nova de Lisboa, 1349-008 Lisbon, Portugal;
| | - Inácio Mandomando
- Centro de Investigação em Saúde de Manhiça, Maputo 1929, Mozambique; (E.D.J.); (P.C.); (M.G.); (D.V.); (N.N.); (T.N.); (S.A.); (P.L.A.)
- Instituto Nacional de Saúde, Ministério da Saúde, Marracuene 1120, Mozambique
- Correspondence: (F.M.); (I.M.)
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14
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Prusty JBK, Choudhury J, Akhila G, Dash M, Mohanty MD, Peddu SP. Clinical Profile and Characterization of Rotavirus Strains in Under-Five Children with Diarrhea: A Hospital-Based Study from Eastern Odisha, India. J PEDIAT INF DIS-GER 2022. [DOI: 10.1055/s-0041-1741002] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
Abstract
Abstract
Objective Diarrheal diseases are one of the most common causes of hospitalization in children under five. Rotavirus is the most common cause of acute diarrhea in younger children, and the prevalence decreases rapidly with increasing age. The objective of the study was to estimate the burden of rotavirus infection in acute gastroenteritis among under-five children admitted to a tertiary care hospital in eastern Odisha, for the clinical profile and identity of the prevalent strains.
Methods This was a prospective observational study linked to the National Rotavirus Surveillance Network (NRSN), where 720 under-five children with diarrhea were enrolled. In total, 675 stool samples of eligible candidates were sent for rotavirus isolation, and identification of strains was done by identifying VP7 (G-type) and VP4 (P-type) genes by reverse transcription polymerase chain reaction.
Results Categorical variables were presented as frequency and percentage, and continuous variables were expressed as mean ± standard deviation. Rotavirus was detected in 256 (37.92%) samples. Males outnumbered females. The most common affected age group was 7 to 12 months, followed by 13 to 18 months. G3P[8] was the most prevalent strain in this study.
Conclusion Children between the age of 7 and 18 months were most vulnerable to rotavirus infection. The most prevalent strain varies from one region to another and continuous surveillance is needed.
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Affiliation(s)
- J Bikrant Kumar Prusty
- Department of Pediatrics, Institute of Medical Sciences and SUM Hospital, Siksha ‘O’ Anusandhan (Deemed to be University), Bhubaneswar, Odisha, India
| | - Jasashree Choudhury
- Department of Pediatrics, Institute of Medical Sciences and SUM Hospital, Siksha ‘O’ Anusandhan (Deemed to be University), Bhubaneswar, Odisha, India
| | - Goolla Akhila
- Department of Pediatrics, Institute of Medical Sciences and SUM Hospital, Siksha ‘O’ Anusandhan (Deemed to be University), Bhubaneswar, Odisha, India
| | - Mrutunjay Dash
- Department of Pediatrics, Institute of Medical Sciences and SUM Hospital, Siksha ‘O’ Anusandhan (Deemed to be University), Bhubaneswar, Odisha, India
| | - Mamata Devi Mohanty
- Department of Pediatrics, Institute of Medical Sciences and SUM Hospital, Siksha ‘O’ Anusandhan (Deemed to be University), Bhubaneswar, Odisha, India
| | - Sai Praveen Peddu
- Department of Pediatrics, Institute of Medical Sciences and SUM Hospital, Siksha ‘O’ Anusandhan (Deemed to be University), Bhubaneswar, Odisha, India
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15
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Rotaviruses and Rotavirus Vaccines. Pathogens 2021; 10:pathogens10080959. [PMID: 34451423 PMCID: PMC8401069 DOI: 10.3390/pathogens10080959] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/20/2021] [Accepted: 07/28/2021] [Indexed: 11/29/2022] Open
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