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

By Katie Thomas, Carl Zimmer and Sharon LaFraniere from NYT Health https://ift.tt/3t04Lwl 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