ReviewInfectious disease reports2021
Viral Load Difference between Symptomatic and Asymptomatic COVID-19 Patients: Systematic Review and Meta-Analysis.
Review in Infectious disease reports, 2021. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 32 papers.
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
32 citing papers in PubMed.
- Universal SARS-CoV-2 RT-qPCR admission screening over 21 months in a German tertiary care hospital: detection of asymptomatic infections.BMC infectious diseases · 2026Article
- Viral dynamics and factors associated with duration of COVID-19 positivity: evidence from the first-three epidemiological waves in Cameroon.BMC infectious diseases · 2025Article
- Terminating pandemics with smartwatches.PNAS nexus · 2025Article
- Clinical Application of Muscle Energy Technique for Knee Function Recovery After Total Knee Arthroplasty.Journal of pain research · 2025Article
- Multisite community-scale monitoring of respiratory and enteric viruses in the effluent of a nursing home and in the inlet of the local wastewater treatment plant.Applied and environmental microbiology · 2024Article
- SARS-CoV-2 Variants May Affect Saliva RT-PCR Assay Sensitivity.The journal of applied laboratory medicine · 2024Article
- SARS-CoV-2 Infection Risk Imposed by Fully-vaccinated Air Travelers Attending an Island-confined Quarantine System Enabling Tourism During the Pandemic: A Retrospective Cohort Study.Journal of preventive medicine and public health = Yebang Uihakhoe chi · 2024Article
- Insights into SARS-CoV-2 Surveillance among Prison Populations in Mato Grosso do Sul, Brazil, in 2022.Viruses · 2024Article
- Symptom propagation in respiratory pathogens of public health concern: a review of the evidence.Journal of the Royal Society, Interface · 2024Review
- Rapid Decline of SARS-CoV-2 Viral Load in Single vs. Double-Dose (Short-Interval <6 Weeks) ChAdOx nCoV-19 Vaccinated Health-Care Workers.Current microbiology · 2024Article
- Tracking inflammation resolution signatures in lungs after SARS-CoV-2 omicron BA.1 infection of K18-hACE2 mice.PloS one · 2024Article
- Article
- Personal characteristics and transmission dynamics associated with SARS-CoV-2 semi-quantitative PCR test results: an observational study from Belgium, 2021-2022.Frontiers in public health · 2024Observational
- Isolation may select for earlier and higher peak viral load but shorter duration in SARS-CoV-2 evolution.Nature communications · 2023Article
- Article
- SARS-CoV-2 transmission modes: Why and how contamination occurs around shared meals and drinks?Food microbiology · 2023Review
- Insight into the mechanisms of coronaviruses evading host innate immunity.Biochimica et biophysica acta. Molecular basis of disease · 2023Review
- Border Control for Infectious Respiratory Disease Pandemics: A Modelling Study for H1N1 and Four Strains of SARS-CoV-2.Viruses · 2023Article
- Diagnostic performance of a novel antigen-capture ELISA for the detection of SARS-CoV-2.Analytical biochemistry · 2023Article
- The sFlt-1/PlGF Ratio in Pregnant Patients Affected by COVID-19.Journal of clinical medicine · 2023Article
Corrections and comments
PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.
Authors and funding
5 authors.
Funding
No grant is acknowledged in the PubMed record.
Abstract
We conducted a systematic review and meta-analysis to investigate the possible difference in the SARS-CoV-2 viral load between asymptomatic and symptomatic COVID-19 patients. Preferred Reporting Items for Systematic Reviews and Meta-Analyses guidelines were followed in abstracting data and assessing validity. We searched MEDLINE, Scopus, Web of Science and Google Scholar for all investigations in the English language, reporting data on the threshold cycle (C
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.