As people decide whether to receive their second COVID booster shot, scientists are learning more about their efficacy. WHYY’s Zoe Read explains what we know so far.
(Original air-date: 4/21/22)
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As people decide whether to receive their second COVID booster shot, scientists are learning more about their efficacy. WHYY’s Zoe Read explains what we know so far.
(Original air-date: 4/21/22)