Mixing Pfizer and AstraZeneca vaccines provides strong protection, according to a preliminary study.
Administering a first dose of one vaccine and a second dose of the other, in either order, is likely to provide potent protection, the researchers said.
from NYT > World News https://ift.tt/3h2A2L0
from NYT > World News https://ift.tt/3h2A2L0
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