Moderna Finds COVID-19 Vaccine Less Effective Against Variant Found In South Africa
In a new round of tests, the drug company wants to see if booster doses of its vaccine will ramp up defenses against emerging strains of the coronavirus.
Read more on NPR
In a new round of tests, the drug company wants to see if booster doses of its vaccine will ramp up defenses against emerging strains of the coronavirus.
Read more on NPR
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