New discovery about repeat COVID-19 vaccinations & how they’re doing more than many people realize

Researchers at Washington University School of Medicine in St. Louis discover how repeat COVID-19 vaccinations elicit antibodies that neutralize variants and some other viruses.

Michael S. Diamond, MD, PhD, Herbert S. Gasser Professor in the Departments of Medicine, Molecular Microbiology, Pathology & Immunology is senior author of a study investigating repeat COVID-19 vaccinations and concerns scientists have about them. Mainly, could the success of the first COVID-19 vaccines work against updated versions? This is a problem for annual influenza shots when immunity elicited by one year’s flu shots interfere with immune responses in the years that follow, reducing the vaccines’ effectiveness against the flu.

So, Diamond and his research team got to work to see if that’s happening with repeat COVID-19 vaccinations.

“We got samples from Moderna’s clinical trials. They had a clinical trial in which they were following their vaccine recipients,” Diamond explained.

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