Safety and Efficacy of COVID-19 Vaccines
Summary
Since the emergence of SARS-CoV-2, a diverse array of vaccine platforms—including mRNA, viral vector, inactivated and protein subunit formulations—have been deployed globally. Clinical trials and large-scale surveillance demonstrate that these vaccines confer high levels of protection against severe disease, hospital admission and death. Real-world data affirm that full vaccination substantially reduces transmission and mitigates the burden of COVID-19 on healthcare systems. Common adverse events are generally mild and transient, encompassing local injection-site reactions and systemic symptoms such as fever, fatigue and myalgia. Rare but serious outcomes—myocarditis, thrombosis with thrombocytopenia, neurological complications—occur at low incidence and are outweighed by the protective benefits. Continued monitoring of safety signals and immunogenicity across age groups, underlying conditions and emerging variants remains essential to inform booster strategies and maintain public confidence.
Research from Nature Portfolio
No recent Nature Portfolio content available.
Safety and Efficacy of COVID-19 Vaccines publication trend
The graph below shows the total number of articles in safety and efficacy of covid-19 vaccines across all publications each year (not limited to Nature Index journals).
Technical terms
Reactogenicity: The capacity of a vaccine to produce expected, transient inflammatory responses such as pain, redness or fever.
Immunogenicity: The ability of a vaccine to elicit an adaptive immune response, typically measured by antibody titres or T-cell activity.
Hazard ratio: A measure of the relative risk of an event occurring in one group compared with another over time.
Self-controlled case series: An observational design comparing incidence of events during a risk period with control periods within the same individual, thereby controlling for fixed confounders.
References
- Cardiovascular events following coronavirus disease 2019 vaccination in adults: a nationwide Swedish study. European Heart Journal (2024).
- Risk of encephalitis and meningitis after COVID-19 vaccination in South Korea: a self-controlled case series analysis. BMC Medicine (2024).
Turn complex research questions into confident strategic decisions
When you're under pressure to set direction, justify investment, or understand your competitive position, you need more than raw data — you need trusted insights you can act on.
Benchmark your performance against global peers using robust, methodologically sound analysis.
Combine quantitative metrics with qualitative expert insight to uncover strengths, gaps and emerging opportunities.
Gain tailored, decision-ready recommendations aligned to your strategic priorities.
Talk to us to learn more about our data dashboards and bespoke strategy reports.
Grow research skills, confidence and careers with training built for every stage of the research lifecycle.
Developed with Nature Portfolio journal Editors and internationally renowned experts. Discover three ways to learn:
Self-paced, online courses in convenient bite-sized units, covering key skills across scientific writing, publishing, grant writing, data analysis, and more.
Expert trainer-led workshops with hands-on exercises and real-time feedback across core research skills, delivered via interactive group sessions.
Editor-led workshops combining core principles in writing and publishing, personalised 1:1 feedback from Nature Portfolio Editors and hands-on exercises.
Explore course catalogues and workshop agendas, enquire about the options or request institutional pricing.