Immune Response Following COVID-19 Vaccination

IgM and IgG in Blood

Few trials have reported the safety and efficacy of the COVID-19 vaccines. However, these trials were mostly focused on post-vaccination adverse events and short-term antibody detection with none monitoring the presence of immunoglobulin G (IgG) in blood at long-term follow-up after the vaccination. This study aims to evaluate the immune response in post-vaccinated individuals across a follow-up period of one year.

The COVID-19 pandemic started in December 2019 and since then has spread globally claiming over 550, 000 deaths, \>12 million infections and an economic toll in the trillions of dollars to date. The urgent need for a global vaccination program to control this pandemic has prompted the development of several vaccines. Preliminary reports from few trials evaluating the safety and efficacy of the vaccines have been published (2-4). However, no trials have yet reported the long-term post-vaccination immune response that would potentially determine the necessity and timing for booster doses of the vaccine. Therefore, this study is designed to assess the presence of immunoglobulin (Ig) M and G at several time points after the first and the second dose of the vaccine.

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United States