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Efficacy and Safety of Messenger RNA Vaccines

Kesaobaka Batisani1, David Chisompola2

  • 1School of Medicine and Health Sciences University of Lusaka Lusaka Lusaka Province Zambia.

Health Science Reports
|June 22, 2026
PubMed
Abstract

Insights

Messenger RNA (mRNA) vaccines offer potent protection against diseases but require careful optimization to balance efficacy with safety. Ongoing research focuses on refining delivery systems and monitoring for adverse effects to maximize benefits.

Area of Science:

  • Vaccinology
  • Immunology
  • Biotechnology

Background:

  • Messenger RNA (mRNA) vaccines have transformed infectious disease prevention and cancer immunotherapy.
  • Despite proven efficacy, concerns regarding safety and immunopathological risks necessitate further investigation.

Purpose of the Study:

  • To evaluate the immunogenicity and safety profiles of mRNA vaccines.
  • To explore design considerations for optimizing protective benefits while minimizing adverse effects.

Main Methods:

  • A comprehensive literature review was performed, encompassing clinical trials, preclinical studies, and pharmacovigilance reports from 2015 to 2025.
  • The review focused on vaccine mechanisms, immune responses, and safety outcomes.

Main Results:

  • mRNA vaccines, delivered via lipid nanoparticles (LNPs), induce robust humoral and cellular immunity, demonstrating high protection levels.
  • Rare adverse effects, including vascular inflammation, myocarditis, and autoimmune phenomena, have been reported.
  • Optimizing the balance between immune activation and tolerability is a key challenge, with ongoing research into personalized strategies and improved delivery systems.

Conclusions:

  • mRNA vaccine technology provides flexibility and potency with a generally favorable safety profile upon optimization.
  • Continued refinement of technology, personalized approaches, and vigilant safety monitoring are crucial for maximizing mRNA vaccine potential.
  • Responsible innovation is essential for advancing mRNA platforms to address global health challenges.
Keywords:
immunogenicitymRNA vaccinessafetyvaccine design

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