Moderna says Covid vaccine effective against UK, S.Africa variants

Moderna Covid vaccine

A vial with the Moderna Covid-19 vaccine is displayed at the corona vaccination centre at the University hospital in Magdeburg, eastern Germany, on January 22, 2021. 

Photo credit: Ronny Hartmann | AFP

What you need to know:

  • But out of caution, the company will test adding a second booster of its vaccine -- to make three shots in total -- and has begun preclinical studies on a booster specifically for the South African variant.

Washington,

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