1200w,https://media.npr.org/assets/img/2023/04/17/gettyimages-1289423565-25421010eed9100d8d81ea1ba70d042a6caab745-s1600-c85.jpg 1600w,https://media.npr.org/assets/img/2023/04/17/gettyimages-1289423565-25421010eed9100d8d81ea1ba70d042a6caab745-s1800-c85.jpg 1800w" sizes="(min-width: 1300px) 763px, (min-width: 1025px) calc(100vw - 496px), (min-width: 768px) calc(100vw - 171px), calc(100vw - 30px)" type="image/jpeg"/>

This transmission electron microscope image shows SARS-CoV-2, the virus that causes COVID-19, isolated from a patient in the U.S. BSIP/BSIP/Universal Images Group via Getty Images hide caption

toggle caption
BSIP/BSIP/Universal Images Group via Getty Images

This transmission electron microscope image shows SARS-CoV-2, the virus that causes COVID-19, isolated from a patient in the U.S.

BSIP/BSIP/Universal Images Group via Getty Images

While the country seemingly moves on from the pandemic, an estimated 15 million U.S. adults are suffering from long COVID. Scientists are trying to understand what causes some people to develop long COVID while others do not.

NPR's Will Stone spoke with researchers and reports on a growing body of evidence that points to one possible explanation: viral reservoirs where the coronavirus can stick around in the body long after a person is initially infected.

In participating regions, you'll also hear a local news segment to help you make sense of what's going on in your community.

Email us at This email address is being protected from spambots. You need JavaScript enabled to view it..

This episode was produced by Elena Burnett. It was edited by William Troop, Will Stone and Jane Greenhalgh. Our executive producer is Sami Yenigun.

Northern California
Public Media Newsletter

Get the latest updates on programs and events.