May 25, 2022
COVID-19 mRNA Vaccines May Impair Long-Term Immunity to SARS-CoV-2, Study Finds
COVID-19 mRNA vaccines may impair the body’s ability to produce a key type of antibody, thus potentially limiting the immune system’s defenses against variants of SARS-CoV-2, a new study suggests.
The preprint study draws upon data collected during Moderna’s randomized control trial for its COVID-19 mRNA vaccine, from July 2020 through March 2021.
Researchers looked at participants who tested positive for SARS-CoV-2 during the trial, comparing serum levels of specific types of antibodies, based on COVID-19 vaccination status, as well as viral load.
