SynthesisInternational journal of infectious diseases : IJID : official publication of the International Society for Infectious Diseases2020
The incidence of the novel coronavirus SARS-CoV-2 among asymptomatic patients: A systematic review.
Synthesis in International journal of infectious diseases : IJID : official publication of the International Society for Infectious Diseases, 2020. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 61 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
61 citing papers in PubMed, 2 syntheses or guidelines pooled it.
- COVID-19 Clinical Presentation Among HIV-Infected Persons in China: A Systematic Review.Current HIV/AIDS reports · 2022Pooled it
- Severe acute respiratory syndrome coronavirus-2 natural animal reservoirs and experimental models: systematic review.Reviews in medical virology · 2021Pooled it
- A policy roadmap for sustainable mass-testing.Health affairs scholar · 2025Article
- A 22 month prospective assessment of neutralizing and IgG antibody levels against SARS-CoV-2 variants following homologous and heterologous BNT162b2 boosting.Scientific reports · 2025Article
- Post-exposure testing at healthcare facilities with SARS-CoV-2 transmission: A rapid review.Journal of public health in Africa · 2025Review
- Development and Evaluation of an In-House Real-Time RT-PCR Targeting nsp10 Gene for SARS-CoV-2 Detection.International journal of molecular sciences · 2024Article
- Seroincidence of SARS-CoV-2 infection prior to and during the rollout of vaccines in a community-based prospective cohort of U.S. adults.Scientific reports · 2024Article
- Prevalence, under-reporting, and epidemiological surveillance of COVID-19 in the Araguaína City of Brazil.PloS one · 2024Article
- A Retrospective Analysis of Jordan's National COVID-19 Call Center: Operations, Effectiveness, and Lessons Learned.Journal of multidisciplinary healthcare · 2024Article
- Seroincidence of SARS-CoV-2 infection prior to and during the rollout of vaccines in a community-based prospective cohort of U.S. adults.medRxiv : the preprint server for health sciences · 2023Article
- Understanding the Relationship of the Human Bacteriome with COVID-19 Severity and Recovery.Cells · 2023Review
- Clinical performance evaluation of BD SARS-CoV-2 reagents for BD MAXDiagnostic microbiology and infectious disease · 2023Article
- Optimal COVID-19 testing strategy on limited resources.PloS one · 2023Article
- Passenger flow analysis and emergency response simulation in a metro network using virus transmission model.Journal of transport & health · 2023Article
- Outcomes of a Community Engagement and Information Gathering Program to Support Telephone-Based COVID-19 Contact Tracing: Descriptive Analysis.JMIR public health and surveillance · 2022Article
- Perspectives of attenders and non-attenders to SARS-CoV-2 asymptomatic community testing in England: a qualitative interview study.BMJ open · 2022Article
- Urban monitoring, evaluation and application of COVID-19 listed vaccine effectiveness: a health code blockchain study.BMJ open · 2022Article
- Photo-Cross-Linked Probe-Modified Magnetic Particles for the Selective and Reliable Recovery of Nucleic Acids.ACS omega · 2022Article
- Impact of age, sex and medical history on adverse reactions to the first and second dose of BNT162b2 mRNA COVID-19 vaccine in Japan: a cross-sectional study.BMC infectious diseases · 2022Article
- Covid-19: pharmacotherapeutic insights on various curative approaches in terms of vulnerability, comorbidities, and vaccination.Inflammopharmacology · 2022Review
1 more citing papers are in PubMed but not listed here.
Corrections and comments
PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.
Authors and funding
2 authors.
Funding
No grant is acknowledged in the PubMed record.
Abstract
backgroundThe recent outbreak of the coronavirus disease 2019 (COVID-19) has quickly spread globally since its discovery in Wuhan, China, in December 2019. A comprehensive strategy - including surveillance, diagnostics, research, and clinical treatment - is urgently needed to win the battle against COVID-19. Recently, numerous studies have reported the incidence of SARS-CoV-2 in asymptomatic patients. Yet, the incidence and viral transmission from the asymptomatic cases are not yet apparent.
aimTo estimate the incidence of COVID-19 among asymptomatic cases and describe its epidemiological and clinical significance this review systematically examined the published literature on SARS-CoV-2 in asymptomatic patients.
methodsThe literature was searched through four scientific databases: PubMed, Web of Science, Scopus, and Science Direct.
resultsSixty-three studies satisfied the inclusion criteria. The majority of the reported studies were from China. However, there was a lack of SARS-CoV-2 epidemiological studies, from several countries worldwide, tracing the actual incidence of COVID-19, especially in asymptomatic patients. Studies with a large sample size (>1000) estimated that the percentage of people contracting SARS-CoV-2 and likely to be asymptomatic ranged from 1.2-12.9%. However, other studies with a smaller sample size reported a much higher incidence and indicated that up to 87.9% of COVID-19 infected individuals could be asymptomatic. Most of these studies indicated that asymptopatics are a potential source of infection to the community.
conclusionThis review highlighted the need for more robust and well-designed studies to better estimate COVID-19 incidence among asymptomatic patients worldwide. Early identification of asymptomatic cases, as well as monitoring and tracing close contacts, could help in mitigating the spread of COVID-19.
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.