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Insight into the Advances in Clinical Trials of SARS-CoV-2 Vaccines

Syed Mohammed Basheeruddin Asdaq1, Shahamah Jomah2, Syed Imam Rabbani3

  • 1Department of Pharmacy Practice, College of Pharmacy, AlMaarefa University, Dariyah, Riyadh 13713, Saudi Arabia.

The Canadian Journal of Infectious Diseases & Medical Microbiology = Journal Canadien Des Maladies Infectieuses Et De La Microbiologie Medicale
|February 21, 2022
PubMed

Insights

COVID-19 vaccines, including mRNA and vector-based types, were rapidly developed. While effective at producing antibodies, their efficacy against all SARS-CoV-2 variants remains uncertain, and serious complications lack definitive links to vaccination.

Area of Science:

  • Immunology
  • Virology
  • Public Health

Background:

  • Severe acute respiratory syndrome coronavirus-2 (SARS-CoV-2) presents a significant global health challenge.
  • Previous interventions have been insufficient to control the spread and severity of the virus.
  • Vaccination is a key strategy for achieving herd immunity against infectious diseases.

Purpose of the Study:

  • To review the development and efficacy of various COVID-19 vaccines.
  • To assess the antibody response and potential complications associated with COVID-19 vaccination.
  • To evaluate the effectiveness of current vaccines against emerging SARS-CoV-2 variants.

Main Methods:

  • Review of over 100 designed and tested COVID-19 vaccines.
  • Analysis of emergency use authorizations granted for vaccines.
  • Examination of clinical trial data on antibody production and reported complications.
  • Assessment of vaccine efficacy against SARS-CoV-2 variants.

Main Results:

  • Multiple vaccine platforms (mRNA, vector-based, inactivated virus, viral peptide) have been developed.
  • Clinical trials demonstrate robust neutralizing antibody production for most vaccines.
  • Some serious complications were reported post-vaccination, but causality remains undetermined.
  • No current vaccine is effective against all SARS-CoV-2 variants.

Conclusions:

  • Rapid development of COVID-19 vaccines has provided a critical tool against the pandemic.
  • While vaccines induce protective antibodies, ongoing monitoring for efficacy against variants and rare complications is necessary.
  • Further research is needed to ensure comprehensive protection against evolving SARS-CoV-2 strains.

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