ArticleInternational journal of infectious diseases : IJID : official publication of the International Society for Infectious Diseases2021
Prevalence of COVID-19 in children, adolescents and adults in remote education situations in the city of Fortaleza, Brazil.
Article in International journal of infectious diseases : IJID : official publication of the International Society for Infectious Diseases, 2021. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 13 papers, 2 of them syntheses that pooled it.
What it found
Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.
The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.
The trial behind it
Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.
Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.
Who cites it
13 citing papers in PubMed, 2 syntheses or guidelines pooled it, 26 citations in OpenAlex.
- Assessment of the detection accuracy of SARS-CoV-2 rapid antigen test in children and adolescents: An updated meta-analysis.Journal of the Chinese Medical Association : JCMA · 2023Pooled it
- Seroprevalence of SARS-CoV-2 in Brazil: A systematic review and meta-analysis.Clinics (Sao Paulo, Brazil) · 2023Pooled it
- The Significance of Serum Immunoglobulin Concentrations in Children with Autism Spectrum Disorders: In Search of Potential Blood Biomarkers.International journal of molecular sciences · 2025Article
- Primary schools' readiness for SARS-CoV-2 preventive measures in Maputo City, Mozambique: a cross-sectional study.International health · 2025Article
- The Effect of Dietary Supplementation on Physical Performance in Adolescent Male Soccer Players Infected with SARS-CoV-2.Nutrients · 2025Article
- Article
- SARS-CoV-2 Seroprevalence in Children under 5 Years Old-A Regional Seroepidemiological Study.Medicina (Kaunas, Lithuania) · 2024Article
- Seroprevalence of antibodies against SARS-CoV-2 in the school community in Campo Grande, state of Mato Grosso do Sul, Brazil, October 2021-November 2022.Frontiers in immunology · 2024Article
- Humoral immune response to SARS-CoV-2 and endemic coronaviruses in urban and indigenous children in Colombia.Communications medicine · 2023Article
- Seroprevalence of anti-SARS-CoV-2 antibodies and factors associated with infection among adolescent men who have sex with men and transgender women in Salvador, Brazil.BMC public health · 2023Article
- Seroprevalence of SARS-CoV-2 antibodies in schoolchildren in the city of São Paulo, 2020.Revista de saude publica · 2023Article
- COVID-19 in Latin America and the Caribbean: Two years of the pandemic.Journal of internal medicine · 2022Review
- Article
Corrections and comments
PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.
Authors and funding
10 authors at 3 institutions in 2 countries.
Funding
No grant is acknowledged in the PubMed record.
Abstract
objectivesA retrospective study was conducted to identify the prevalence of COVID-19 through serology and RT-PCR in children, adolescents and adults. A database of the COVID-19 Tracking Program in school children was used.
methodsThe data comprised sociodemographic and clinical variables, results of serological tests (IgM and IgG), and real-time-polymerase chain reaction (RT-PCR) results of IgM-positive individuals. The statistical analysis was performed with a 5% significance level.
resultsAmong 423 children, 107 (25.3%) exhibited seroprevalence with IgG, IgM or IgG/IgM; among 854 adolescents, 250 (29.2%) had positive serology; and among 282 adults, 59 (20.9%) were positive. The frequency of positivity on RT-PCR for SARS-CoV-2 was 3.5%, 3.6% and 6.0% in children, adolescents and adults, respectively. Children had a lower incidence of symptoms than adolescents (p = 0.001) and adults (p = 0.003); the most frequent were fever, ageusia, anosmia, headache, dry cough, sore throat, muscle pain, runny nose, dyspnoea, and diarrhoea.
conclusionsThe prevalence rate for all groups was 26.7% in serology and 4.04% in RT-PCR. Children had lower rates of IgM and fewer symptoms compared with adolescents and adults. The data suggest the potential for transmissibility in all age groups.
Indexed as
Identifiers
What OpenQuestion holds
Registered trials
Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.