Novavax’s Vaccine Works Well — Except on Variant First Found in South Africa

By BY KATIE THOMAS, CARL ZIMMER AND SHARON LAFRANIERE from NYT Health An early analysis in Britain found that the vaccine had an efficacy rate of nearly 90 percent. But in a small South Africa trial, the efficacy rate dropped to just under 50 percent. https://ift.tt/3t04Lwl