Breakthrough COVID-19 cases are more common and severe in people with weakened immune systems, according to a new study.
Breakthrough infections are those that occur in vaccinated people.
A COVID-19 vaccine is administered in Rosemead, Calif., on Nov. 29, 2021. Frederic J. Brown/AFP via Getty Images
Zachary Stieber
Senior Reporter
|Updated:
Zachary Stieber
Senior Reporter
Zachary Stieber is a senior reporter for The Epoch Times based in Maryland. He covers U.S. and world news. Contact Zachary at [email protected]
