Prognosis
Covid Vaccines May Need Adjusting to New Strains, Scientists Say
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Covid-19 vaccines will have to be adjusted to improve their protective power against mutations such as the one that’s now prevalent in South Africa, researchers said.
A study into a vaccine from Novavax Inc. published Thursday showed that vaccines may be somewhat less effective against new variants. Johnson & Johnson released similar results on Friday from its trial.
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Covid Vaccines May Need Adjusting to New Strains, Scientists Say