The Wuhan Lab and the Gain-of-Function Disagreement

A disagreement between Republican Sen. Rand Paul and Dr. Anthony Fauci has put $600,000 of U.S. grant money to the Wuhan Institute of Virology back into the spotlight, while making “gain-of-function” research a household term — all amid calls for more investigation into the origins of SARS-CoV-2.

At issue is whether the National Institutes of Health funded research on bat coronaviruses that could have caused a pathogen to become more infectious to humans and, separately, if SARS-CoV-2 — the virus that causes the disease COVID-19 — transferred naturally from bats to...