Novavax COVID-19 Vaccine Effective, But Less So Against Variant In South Africa

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Nurse Vash Deelchand inoculated Kate Bingham, chair of the U.K. government

Novavax says its COVID-19 vaccine is 89% effective at preventing illness, according to an interim analysis of a U.K. study. But the vaccine wasn't as effective against some viral variants.

(Image credit: Kirsty O'Connor - PA Images/PA Images via Getty Images)