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COVID-19

COVID-19 Vaccine Side Effects: New Study Provides Insights into Monitoring and Safety

Strategic Insights

— 1 min read

Researchers at Jawaharlal Nehru University have published a new study on the incidence and time to onset of side effects associated with the COVID-19 vaccine. The study, which analyzed data from 716 vaccine recipients, found that 79.5% experienced at least one side effect, with pain at the vaccination site and fever being the most commonly reported. The study highlights the importance of early monitoring of side effects to ensure vaccine safety and maintain public confidence, and identifies older age, lower education, and use of prior medication as significant predictors of post-vaccination side effects.

Key Takeaways:

  • The study found that 79.5% of vaccine recipients experienced at least one side effect, with 73.8% reporting pain at the vaccination site and 65.2% reporting fever.
  • The majority of side effects occurred within 12 hours of vaccination, with older age, lower education, and use of prior medication identified as significant predictors of post-vaccination side effects.
  • The log-logistic survival model demonstrated the best fit for modeling the time to onset of vaccine side effects.
  • The study emphasizes the importance of early monitoring of side effects to ensure vaccine safety and maintain public confidence.
  • The research supports the use of personalized care and early monitoring to ensure vaccine safety, health, and sustain public confidence.

Statistics:

  • 79.5% of vaccine recipients experienced at least one side effect.
  • 73.8% of vaccine recipients reported pain at the vaccination site.
  • 65.2% of vaccine recipients reported fever.
  • 12 hours: the time frame in which the majority of side effects occurred.
  • Hazard Ratio (HR) = 1.51: the risk factor for post-vaccination side effects associated with older age.
  • Hazard Ratio (HR) = 2.28: the risk factor for post-vaccination side effects associated with lower education.
  • Hazard Ratio (HR) = 1.48: the risk factor for post-vaccination side effects associated with use of prior medication.

Sources:

  • Exploring the incidence and time to onset of side effects associated with the COVID-19 vaccine. Discover Social Science and Health, 2025, 5(1): 1-17.
  • https://doi-org.sdpl.idm.oclc.org/10.1007/s44155-025-00292-4
  • Jawaharlal Nehru University Researchers Have Published New Data on COVID-19 (Exploring the incidence and time to onset of side effects associated with the COVID-19 vaccine). Medical Letter on the CDC & FDA. October 26, 2025; p 312.

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