U.S. launches trial on COVID-19 mRNA vaccines

COVID-19 vaccine

COVID-19 vaccine

Agency Report

Researchers in the United States are conducting a clinical trial designed to help understand rare but potentially serious systemic allergic reactions to COVID-19 mRNA vaccines.

This was disclosed by the U.S. National Institutes of Health (NIH) on Wednesday.

The single-site trial will enrol up to 100 people aged 16 to 69 years who had an allergic reaction to the first dose of the COVID-19 mRNA vaccine.

Study participants will receive a second dose of vaccine as inpatients under carefully controlled conditions at the NIH’s Clinical Centre in Bethesda, Maryland.

At admission and during the inpatient stay, participants will have breathing tests and frequent blood draws, which will be used to discern details of any allergic or other responses to the vaccine.

The enrollees will also complete mental health questionnaires prior to, at the time of, and in the months following vaccination, according to the NIH.

“People who experienced an allergic reaction after receiving a COVID-19 mRNA vaccine may be hesitant to complete their vaccine regimen.

“This study will help us determine if individuals who experienced moderate systemic allergic reactions can safely receive a second dose of a COVID-19 mRNA vaccine,” said Anthony Fauci, director of the U.S. National Institute of Allergy and Infectious Diseases.


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