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    The Food and Drug Administration authorized a fourth dose, or second booster shot, of the Pfizer and Moderna COVID-19 vaccines for adults age 50 and older and immunocompromised groups.

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    • I’m glad my patients who need it can get boosted but worry that w/o clearer msg’ing on exactly which pts/popul’ns benefit most from boosters, we risk boosting low-risk popl’ns & widening equity gaps. Thx for inviting me to comment, @YahooNews⁩ 👇 https://t.co/9NTqZsPVpi