Wednesday, June 2, 2021

COVID-19: US researchers begin testing mix-and-match vaccine boosters

The trial will include about 150 adults who have been fully vaccinated with one of the three approved COVID-19 vaccines in the United States.

from Latest News https://www.dnaindia.com/world/report-covid-19-us-researchers-begin-testing-mix-and-match-vaccine-boosters-2893216
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