How Long Does COVID Immunity Last Anyway?

A valuable NASA satellite observatory is falling to Earth faster than scientists expected. It’s called the Neil Gehrels Swift Observatory, or “Swift” for short, and it can respond to celestial events much faster than its sky-gazing counterparts. To save Swift and test out a first ...  Show more

Every dog lover’s greatest fear is inevitably losing their pet to time. We want our furry pals to stick around as long as they can. That wish may soon become reality with a new pill from a company called Loyal. It aims to extend the lives–and health–of dogs. This new drug also se ...  Show more

Does your immunity still last for months? We asked a researcher who has been studying omicron reinfections. This episode was produced by Jon Ehrens, edited by Matthew Collette, fact-checked by Laura Bullard, engineered by Paul Mounsey, and hosted by Sean Rameswaram. Transcript at ...  Show more

Immunity to Covid-19. We've all been hoping to develop it ever since the virus emerged two years ago. Since then, a race to vaccinate the world has begun in earnest, with many countries rolling out booster shots in response to the rise of the Omicron variant. Health officials and ...  Show more

The rise of the Delta variant has prompted a thorny question: Do we need a booster dose of the vaccine for Covid-19? Vaccine makers think so, but regulators are yet to be convinced.

Principles are also at stake: Should richer countries be talking about administering extr ...

Many Americans haven't gotten an initial COVID-19 booster. A second one is authorized for some. Others are waiting to see if they can get one soon. Will everyone need them eventually? An FDA advisory committee met Wednesday to discuss what's next in America's booster strategy. Dr ...  Show more