Moderna plans to have third vaccine booster shot ready by fall
CBSN
COVID-19 vaccine maker Moderna will make a third booster shot for its two-dose vaccine available to Americans by the fall, CEO Stéphane Bancel said this week.
Moderna's vaccine is more than 90% effective against the coronavirus six months after the second shot, studies show. What remains unclear is how long immunity from the virus lasts. The same is true of Pfizer's two-dose COVID-19 vaccine.
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