Scientists’ understanding of long covid is improving

(Economist) PODCAST Our podcast on science and technology. This week, we examine the latest research into what may be causing long covid, and ask whether the hunt for answers could shed light on other chronic conditions. SOON AFTER the pandemic began, another health crisis started to emerge. Long covid now affects millions of people around the world. But finding the causes of the condition—and how to treat it—has been a challenge. Three years after the SARS-CoV-2 virus was first detected, are scientists any closer to understanding long covid?