Covid-19 variant first detected in S Africa spreading locally

Novavax vaccine 96% effective against original coronavirus, 86% vs British variant

Oxford study indicates AstraZeneca effective against Brazil variant, source says

Russian scientists say Sputnik V performs well against Covid mutations

Pfizer says South African variant could significantly reduce vaccine protection

South Africa puts AstraZeneca vaccinations on hold over variant data

Pfizer vaccine only slightly less effective against key South African mutations - study

Moderna says it believes vaccine will work against new variants