Coronavirus cases may have been spreading in Wuhan and Seattle weeks before first detected: researchers

Thousands of cases of the novel coronavirus may have circulated undetected in both Wuhan, China, and Seattle early in the pandemic, according to research from the University of Texas-Austin published in The Lancet.

The research suggests that by the time lockdowns were imposed in both cities, the early epicenters of their respective countries, the virus may have been spreading for...