Prolonged scientific trials to check vaccines modified for variants will not be vital, FDA says


If the novel coronavirus mutates such that present COVID-19 vaccines are now not efficient at preventing the virus, researchers should modify the vaccines. 

However new tips issued by the Meals and Drug Administration (FDA) point out that lengthy, intensive scientific trials is probably not vital to check the modified vaccines. Quite, the modified vaccines might be examined in small-scale trials like these performed to develop the flu vaccine yearly, The New York Instances reported.


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