Trial reportJournal of medical virology2021
Safety of COVID-19 vaccines.
Trial report in Journal of medical virology, 2021. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 99 papers, 11 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
99 citing papers in PubMed, 11 syntheses or guidelines pooled it, 185 citations in OpenAlex.
- Safety and Efficacy of Respiratory Syncytial Virus Vaccination in Older Adults: Systematic Review and Meta-Analysis of Randomized Controlled Trials.JMIR public health and surveillance · 2025Pooled it
- Causal relationship between COVID-19, vaccination, and 20 digestive diseases: a comprehensive two-sample Mendelian randomization study.Virology journal · 2025Pooled it
- Can Labs Help With Vaccination? In Vitro Tests in Diagnosis of Allergy to COVID-19 Vaccines-A Systematic Review.Immunity, inflammation and disease · 2025Pooled it
- Efficacy, immunogenicity and safety of respiratory syncytial virus prefusion F vaccine: systematic review and meta-analysis.BMC public health · 2024Pooled it
- Systematic review exploring the clinical features of optic neuritis after SARS-CoV infection and vaccination.BMJ open ophthalmology · 2023Pooled it
- Effects of SARS-CoV-2 Vaccines on Sperm Quality: Systematic Review.JMIR public health and surveillance · 2023Pooled it
- Global incidence pattern and factors associated with common cutaneous reactions related to COVID-19 vaccination of 2.55 million participants in real-world settings: A systematic review and meta-analysis.Journal of global health · 2023Pooled it
- Effect of COVID-19 vaccination on semen parameters: A systematic review and meta-analysis.Journal of medical virology · 2023Pooled it
- Cutaneous adverse reactions following COVID-19 vaccinations: A systematic review and meta-analysis.Journal of cosmetic dermatology · 2022Pooled it
- Immunologic response, Efficacy, and Safety of Vaccines against COVID-19 Infection in Healthy and immunosuppressed Children and Adolescents Aged 2 - 21 years old: A Systematic Review and Meta-analysis.Journal of clinical virology : the official publication of the Pan American Society for Clinical Virology · 2022Pooled it
- Headache onset after vaccination against SARS-CoV-2: a systematic literature review and meta-analysis.The journal of headache and pain · 2022Pooled it
- Trial
- Safety of COVID-19 vaccines.Journal of medical virology · 2021Trial
- Article
- Long-term kinetics of anti-RBD IgG antibodies 16 months after COVID-19 vaccination in Morocco: a longitudinal cohort study.Scientific reports · 2026Article
- Investigation of the administration technique and side effects of COVID-19 vaccines: a descriptive and cross-sectional study.Scientific reports · 2026Article
- Safety of sinopharm COVID-19 vaccine in children and adolescents aged 5 to 18 years: a cohort event monitoring study.BMC public health · 2025Article
- COVID-19 vaccination and miscarriage risk: RNA-seq and bioinformatics analysis at the maternal-foetal interface.Journal of global health · 2025Article
- Long-term trends in reporting of cardiac adverse drug reactions to COVID-19 vaccines - an exploratory analysis of the EudraVigilance database.BMC infectious diseases · 2025Observational
- Post-authorisation effectiveness and safety study: a multicenter observational study of the effectiveness and safety of the inactivated SARS-CoV-2 vaccine.Clinical and experimental vaccine research · 2025Article
39 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
10 authors at 5 institutions in 3 countries.
Funding
No grant is acknowledged in the PubMed record.
Abstract
This study is aimed to identify the adverse effects associated with three types of coronavirus disease 2019 vaccines. Approximately 1736 individuals agreed to participate in this study. The participants involved in the study were individuals who had received the first dose or full course (two doses) of the vaccine at least 30 days before the survey. A direct and interactive web-based system interview with a paper and electronic version of the questionnaire was used for all participants. A total of 1736 randomized individuals were identified. The reactogenicity of the vaccines including pain, redness, urticaria, and swelling at the site of the injection was reported in 34.56% of the participants. Local site reaction was reported in more individuals who had Pfizer and AstraZeneca vaccines than those who received the Sinopharm vaccine. The systemic events were more common with AstraZeneca and Pfizer vaccines, symptoms reported were fatigue, body pain, headache, muscle pain, fever, and gastrointestinal side effects. There were no correlations between age or gender, and the duration of the adverse effects for the three vaccines. Swelling and severe allergic reaction of the eyelids, severe hypotension, generalized body aches, shortness of breath, weakness and numbness on the injected arm, acute hyperglycemia, severe chest pain, and fever more than 39°C were among the unusual signs and symptoms reported by the participants. Pfizer, AstraZeneca, and Sinopharm vaccines were found to be safe and Sinopharm vaccine showed a lower prevalence of adverse effects compared with the other vaccines. The duration and severity of adverse effects were not affected by age or gender. Unusual side effects should be closely monitored to establish determine they are linked to the immunization.
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.