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Older adults should get 2 doses of the updated COVID shot, CDC says

Live Science
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78% Informative

COVID-19 vaccine has been updated to guard against new versions of the coronavirus that have recently emerged.

Adults 65 and older and people with weakened immune systems should get two doses of the new vaccine.

There are three vaccines available, made by Pfizer-BioNTech , Moderna and Novavax .

The CDC doesn't recommend one type of vaccine over another.