If it had come from somewhere else first, and then traveled to the market where its spread was amplified — as a lab leak theory of Covid-19’s origin suggests — the timing of the emergence of the virus ...

Hampshire et al. (Feb. 29 issue) 1 report that in a large cohort of adults living in the United Kingdom, participants with persisting symptoms after Covid-19 apparently had more neurocognitive ...

The World Health Organization has urged China to share data to help understand the origins of Covid-19, five years on from the start of the pandemic in the Chinese city of Wuhan. On December 31, 2019, ...

After an in-depth analysis of the genetic material from hundreds of swabs taken from the walls, floors, machines and drains inside the Huanan Seafood Wholesale Market in Wuhan, China — a site that’s ...