Taiwanese Lab Leak Sharpens Debate on Pandemic Origin

A recent SARS-CoV-2 leak from a BSL-3 facility in Taiwan intensifies questions about a lab leak from Wuhan’s less-secure BSL-2 facility

The P4 laboratory on the campus of the Wuhan Institute of Virology in Wuhan, Hubei Province, China, on May 13, 2020. Hector Retamal/AFP via Getty Images

News Analysis

On Dec. 9, Taiwan announced that a researcher working in a biosafety level-3 (BSL-3) laboratory in Taipei tested positive for the Delta variant of COVID-19 “while experimenting on the virus in the lab.”