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Kulkarni D, Ismail NF, Zhu F, Wang X, del Carmen Morales G, Srivastava A, Allen KE, Spinardi J, Rahman AE, Kyaw MH, Nair H. Epidemiology and clinical features of SARS-CoV-2 infection in children and adolescents in the pre-Omicron era: A global systematic review and meta-analysis. J Glob Health 2024; 14:05003. [PMID: 38419461 PMCID: PMC10902805 DOI: 10.7189/jogh.14.05003] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/02/2024] Open
Abstract
Methods We searched MEDLINE, Embase, Global Health, CINAHL, China National Knowledge Infrastructure, Wanfang, CQvip, and the World Health Organization (WHO) COVID-19 global literature databases for primary studies recruiting children aged ≤18 years with a diagnosis of SARS-CoV-2 infection confirmed either by molecular or antigen tests. We used the Joanna Briggs Institute critical appraisal tools to appraise the study quality and conducted meta-analyses using the random effects model for all outcomes except for race/ethnicity as risk factors of SARS-CoV-2 infection. Results We included 237 studies, each reporting at least one of the study outcomes. Based on data from 117 studies, the pooled SARS-CoV-2 positivity rate was 9.30% (95% confidence interval (CI) = 7.15-11.73). Having a comorbidity was identified as a risk factor for SARS-CoV-2 infection (risk ratio (RR) = 1.33; 95% CI = 1.04-1.71) based on data from 49 studies. Most cases in this review presented with mild disease (n = 50; 52.47% (95% CI = 44.03-60.84)). However, 20.70% of paediatric SARS-CoV-2 infections were hospitalised (67 studies), 7.19% required oxygen support (57 studies), 4.26% required intensive care (93 studies), and 2.92% required assisted ventilation (63 studies). The case fatality ratio (n = 119) was 0.87% (95% CI = 0.54-1.28), which included in-hospital and out-of-hospital deaths. Conclusions Our data showed that children were at risk for SARS-CoV-2 infections and severe outcomes in the pre-Omicron era. These findings underscore the need for effective vaccination strategies for the paediatric population to protect against the acute and long-term sequelae of COVID-19. Registration PROSPERO: CRD42022327680.
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Affiliation(s)
- Durga Kulkarni
- Centre for Global Health, University of Edinburgh, Edinburgh, United Kingdom
| | - Nabihah Farhana Ismail
- Centre for Global Health, University of Edinburgh, Edinburgh, United Kingdom
- Communicable Disease Control Unit, Public Health Department, Johor State, Malaysia
| | - Fuyu Zhu
- Schol of Public Health, Nanjing Medical University, China
| | - Xin Wang
- Schol of Public Health, Nanjing Medical University, China
| | | | | | | | | | - Ahmed Ehsanur Rahman
- Centre for Global Health, University of Edinburgh, Edinburgh, United Kingdom
- International Centre for Diarrhoeal Diseases Research, Bangladesh
| | | | - Harish Nair
- Centre for Global Health, University of Edinburgh, Edinburgh, United Kingdom
- Schol of Public Health, Nanjing Medical University, China
- MRC/Wits Rural Public Health and Health Transitions Research Unit (Agincourt), School of Public Health, Faculty of Health Sciences, University of the Witwatersrand, Johannesburg, South Africa
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Vardavas C, Nikitara K, Mathioudakis AG, Hilton Boon M, Phalkey R, Leonardi-Bee J, Pharris A, Deogan C, Suk JE. Transmission of SARS-CoV-2 in educational settings in 2020: a review. BMJ Open 2022; 12:e058308. [PMID: 35383084 PMCID: PMC8983413 DOI: 10.1136/bmjopen-2021-058308] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/24/2022] Open
Abstract
OBJECTIVES School closures have been used as a core non-pharmaceutical intervention (NPI) during the COVID-19 pandemic. This review aims at identifying SARS-CoV-2 transmission in educational settings during the first waves of the pandemic. METHODS This literature review assessed studies published between December 2019 and 1 April 2021 in Medline and Embase, which included studies that assessed educational settings from approximately January 2020 to January 2021. The inclusion criteria were based on the PCC framework (P-Population, C-Concept, C-Context). The study Population was restricted to people 1-17 years old (excluding neonatal transmission), the Concept was to assess child-to-child and child-to-adult transmission, while the Context was to assess specifically educational setting transmission. RESULTS Fifteen studies met inclusion criteria, ranging from daycare centres to high schools and summer camps, while eight studies assessed the re-opening of schools in the 2020-2021 school year. In principle, although there is sufficient evidence that children can both be infected by and transmit SARS-CoV-2 in school settings, the SAR remain relatively low-when NPI measures are implemented in parallel. Moreover, although the evidence was limited, there was an indication that younger children may have a lower SAR than adolescents. CONCLUSIONS Transmission in educational settings in 2020 was minimal-when NPI measures were implemented in parallel. However, with an upsurge of cases related to variants of concern, continuous surveillance and assessment of the evidence is warranted to ensure the maximum protection of the health of students and the educational workforce, while also minimising the numerous negative impacts that school closures may have on children.
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Affiliation(s)
- Constantine Vardavas
- School of Medicine, University of Crete, Heraklion, Greece
- Department of Oral Health Policy and Epidemiology, Harvard University, Cambridge, Massachusetts, USA
| | | | - Alexander G Mathioudakis
- Immunity and Respiratory Medicine, The University of Manchester, Manchester, UK
- Manchester Academic Health Science Centre, Manchester, UK
| | - Michele Hilton Boon
- WISE Centre for Economic Justice, Glasgow Caledonian University, Glasgow, UK
| | - Revati Phalkey
- Division of Epidemiology and Public Health, University of Nottingham School of Medicine, Nottingham, UK
| | - Jo Leonardi-Bee
- Division of Epidemiology and Public Health, University of Nottingham School of Medicine, Nottingham, UK
| | - Anastasia Pharris
- Epidemic Prone Diseases, Coronavirus and Influenza, Disease Programmes Unit, European Centre for Disease Prevention and Control, Solna, Sweden
| | - Charlotte Deogan
- Epidemic Prone Diseases, Coronavirus and Influenza, Disease Programmes Unit, European Centre for Disease Prevention and Control, Solna, Sweden
| | - Jonathan E Suk
- Emergency Preparedness and Response Support, Public Health Functions Unit, European Centre for Disease Prevention and Control, Solna, Sweden
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Silverberg SL, Zhang BY, Li SNJ, Burgert C, Shulha HP, Kitchin V, Sauvé L, Sadarangani M. Child transmission of SARS-CoV-2: a systematic review and meta-analysis. BMC Pediatr 2022; 22:172. [PMID: 35365104 PMCID: PMC8975734 DOI: 10.1186/s12887-022-03175-8] [Citation(s) in RCA: 35] [Impact Index Per Article: 17.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/23/2021] [Accepted: 02/15/2022] [Indexed: 11/29/2022] Open
Abstract
BACKGROUND Understanding of the role of children in COVID-19 transmission has significant implications for school and childcare policies, as well as appropriate targeting of vaccine campaigns. The objective of this systematic review was to identify the role of children in SARS-CoV-2 transmission to other children and adults. METHODS MEDLINE, EMBASE, CINAHL, Cochrane Central Register of Controlled Trials, and Web of Science were electronically searched for articles published before March 31, 2021. Studies of child-to-child and child-to-adult transmission and quantified the incidence of index and resulting secondary attack rates of children and adults in schools, households, and other congregate pediatric settings were identified. All articles describing confirmed transmission of SARS-CoV-2 from a child were included. PRISMA guidelines for data abstraction were followed, with each step conducted by two reviewers. RESULTS 40 of 6110 articles identified met inclusion criteria. Overall, there were 0.8 secondary cases per primary index case, with a secondary attack rate of 8.4% among known contacts. The secondary attack rate was 26.4% among adult contacts versus 5.7% amongst child contacts. The pooled estimate of a contact of a pediatric index case being infected as secondary case was 0.10 (95% CI 0.03-0.25). CONCLUSIONS Children transmit COVID-19 at a lower rate to children than to adults. Household adults are at highest risk of transmission from an infected child, more so than adults or children in other settings.
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Affiliation(s)
- Sarah L Silverberg
- Department of Pediatrics, BC Children's Hospital, 4500 Oak Street, V6H 3N1, Vancouver, BC, Canada.
| | - Bei Yuan Zhang
- Faculty of Medicine, University of British Columbia, Vancouver, Canada
| | | | - Conrad Burgert
- Faculty of Medicine, University of British Columbia, Vancouver, Canada
| | - Hennady P Shulha
- Department of Pediatrics, BC Children's Hospital, 4500 Oak Street, V6H 3N1, Vancouver, BC, Canada
- Vaccine Evaluation Center, BC Children's Hospital Research Institute, Vancouver, Canada
- BC Centre for Disease Control, Vancouver, Canada
| | | | - Laura Sauvé
- Department of Pediatrics, BC Children's Hospital, 4500 Oak Street, V6H 3N1, Vancouver, BC, Canada
- Vaccine Evaluation Center, BC Children's Hospital Research Institute, Vancouver, Canada
| | - Manish Sadarangani
- Department of Pediatrics, BC Children's Hospital, 4500 Oak Street, V6H 3N1, Vancouver, BC, Canada
- Vaccine Evaluation Center, BC Children's Hospital Research Institute, Vancouver, Canada
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Stein M, Ashkenazi-Hoffnung L, Greenberg D, Dalal I, Livni G, Chapnick G, Stein-Zamir C, Ashkenazi S, Hecht-Sagie L, Grossman Z. The Burden of COVID-19 in Children and Its Prevention by Vaccination: A Joint Statement of the Israeli Pediatric Association and the Israeli Society for Pediatric Infectious Diseases. Vaccines (Basel) 2022; 10:81. [PMID: 35062742 PMCID: PMC8781684 DOI: 10.3390/vaccines10010081] [Citation(s) in RCA: 24] [Impact Index Per Article: 12.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/30/2021] [Revised: 12/23/2021] [Accepted: 12/29/2021] [Indexed: 01/27/2023] Open
Abstract
As of October 2021, SARS-CoV-2 infections were reported among 512,613 children and adolescents in Israel (~33% of all COVID-19 cases). The 5-11-year age group accounted for about 43% (223,850) of affected children and adolescents. In light of the availability of the Pfizer-BioNTech BNT162b2 vaccine against COVID-19 for children aged 5-11 years, we aimed to write a position paper for pediatricians, policymakers and families regarding the clinical aspects of COVID-19 and the vaccination of children against COVID-19. The first objective of this review was to describe the diverse facets of the burden of COVID-19 in children, including the direct effects of hospitalization during the acute phase of the disease, multisystem inflammatory syndrome in children, long COVID and the indirect effects of social isolation and interruption in education. In addition, we aimed to provide an update regarding the efficacy and safety of childhood mRNA COVID-19 vaccination and to instill confidence in pediatricians regarding the benefits of vaccinating children against COVID-19. We reviewed up-to-date Israeli and international epidemiological data and literature regarding COVID-19 morbidity and its sequelae in children, vaccine efficacy in reducing COVID-19-related morbidity and SARS-CoV-2 transmission and vaccine safety data. We conducted a risk-benefit analysis regarding the vaccination of children and adolescents. We concluded that vaccines are safe and effective and are recommended for all children aged 5 to 11 years to protect them from COVID-19 and its complications and to reduce community transmissions. Based on these data, after weighing the benefits of vaccination versus the harm, the Israeli Ministry of Health decided to recommend vaccination for children aged 5-11 years.
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Affiliation(s)
- Michal Stein
- Infectious Diseases and Infection Control Unit, Hillel Yaffe Medical Center, Hadera 3810101, Israel
- Rappaport Faculty of Medicine, Technion—Israel Institute of Technology, Haifa 3109601, Israel
| | - Liat Ashkenazi-Hoffnung
- Department of Day Care Hospitalization, Schneider Children’s Medical Center, Petah Tikva 4920235, Israel;
- Sackler Faculty of Medicine, Tel Aviv University, Tel Aviv-Yafo 6997801, Israel; (I.D.); (G.L.)
| | - David Greenberg
- The Pediatric Infectious Disease Unit, Soroka Medical Center, Be’er Sheva 8458900, Israel;
- The Faculty of Health Sciences, Joyce & Irving Goldman Medical School at Ben Gurion University of the Negev, Be’er Sheva 8410501, Israel
| | - Ilan Dalal
- Sackler Faculty of Medicine, Tel Aviv University, Tel Aviv-Yafo 6997801, Israel; (I.D.); (G.L.)
- Pediatric Department, E. Wolfson Medical Center, Holon 5822012, Israel
| | - Gilat Livni
- Sackler Faculty of Medicine, Tel Aviv University, Tel Aviv-Yafo 6997801, Israel; (I.D.); (G.L.)
- Department of Pediatrics A, Schneider Children’s Medical Center, Petah Tikva 4920245, Israel
| | - Gil Chapnick
- Maccabi Healthcare Services, Tel Aviv-Yafo 6812509, Israel; (G.C.); (L.H.-S.); (Z.G.)
| | - Chen Stein-Zamir
- Jerusalem District Health Office, Jerusalem 9137001, Israel;
- Braun School of Public Health and Community Medicine, Faculty of Medicine, Hebrew University of Jerusalem, Jerusalem 9112102, Israel
| | - Shai Ashkenazi
- Schneider Children’s Medical Center, Petah Tikva 4920235, Israel;
- Adelson School of Medicine, Ariel University, Ari’el 4070000, Israel
| | - Lior Hecht-Sagie
- Maccabi Healthcare Services, Tel Aviv-Yafo 6812509, Israel; (G.C.); (L.H.-S.); (Z.G.)
| | - Zachi Grossman
- Maccabi Healthcare Services, Tel Aviv-Yafo 6812509, Israel; (G.C.); (L.H.-S.); (Z.G.)
- Adelson School of Medicine, Ariel University, Ari’el 4070000, Israel
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