U.S. vaccination rollout gathers speed, as threat of variants grows
Amid signs of progress, scientists warned the spread of coronavirus variants must be contained before they become dominant. — NYT: Top Stories
Amid signs of progress, scientists warned the spread of coronavirus variants must be contained before they become dominant. — NYT: Top Stories
Rich countries are buying up coronavirus vaccines, leaving poorer regions vulnerable — and as potential breeding grounds for variants, like one found in South Africa, that could make vaccines less effective. — NYT: Top Stories