Preliminary results of an ongoing study in the United Kingdom suggest alternating the Oxford-AstraZeneca and Pfizer-BioNTech vaccines causes more frequent mild…
Preliminary results of an ongoing study in the United Kingdom suggest alternating the Oxford-AstraZeneca and Pfizer-BioNTech vaccines causes more frequent mild to moderate symptoms, but there are no . . .
Camille Bains
A vial of AstraZeneca vaccine is seen at a mass COVID-19 vaccination clinic in Calgary, Alta., on Thursday, April 22, 2021.THE CANADIAN PRESS/Jeff McIntosh May 12, 2021 - 3:41 PM
Preliminary results of an ongoing study in the United Kingdom suggest alternating the Oxford-AstraZeneca and Pfizer-BioNTech vaccines causes more frequent mild to moderate symptoms, but there are no other safety concerns from mixing those vaccines.
However, researchers at the University of Oxford have not yet determined how a combination of shots would affect the immune system s response compared with sticking with the same COVID-19 vaccine for both the prime and booster shots.