Nurith Aizenman

South Africa is a case study of the inequities around the coronavirus vaccine. It has one of the world's worst outbreaks, fueled by a new variant. Yet officials are struggling to buy enough vaccines.

New results from a COVID-19 vaccine trial in South Africa suggest the vaccine that was developed by AstraZeneca may not be as effective against the variant found there.

Not everyone gets tested. A new model estimates how many infections are missed because of this and how many people are actively shedding the virus. The results lend urgency to the vaccine race.

New research shows how official figures understate the U.S. pandemic: On any given day the number of infected people who are actively contagious is ten times that day's tally of new reported cases.

Six takeaways from discussions at the annual meeting of the World Health Organization's Executive Board.

A year ago today, the WHO first learned of a cluster of pneumonia cases in Wuhan, China of "unknown" origin. Here's the impact of that fateful day, by the numbers.

One year ago on Thursday, China notified the World Health Organization that it had discovered a new coronavirus circulating in Wuhan. NPR discusses what happened after that.

A new study suggests kids in poor countries benefit hugely from having older sisters — who are more likely than brothers or even mothers — to engage in stimulating play.

The authors of the "Global Burden of Disease" report track the toll from every conceivable cause of death or disability. This year they also share intriguing solutions that give cause for optimism.

Nine months after the first reported fatality in China last January, the world has hit a sobering milestone.