Novavax vaccine almost 90 percent effective in trial, but not against South Africa variant | TheHill

Novavax vaccine almost 90 percent effective in trial, but not against South Africa variant | TheHill: Novavax's COVID-19 vaccine has been found to be almost 90 percent effective in a clinical trial in the United Kingdom, the company said Thursday, but was far less effective in a separate trial in South Africa given the variant prevalent there.