With the flurry of COVID-19 cases coming out of the White House, experts have been calling for classic contact tracing to identify who else might be at risk. But these investigations could go even further by adding a technique called viral genome sequencing. Popular among disease detectives, this could answer when and how President Donald Trump himself was exposed.

https://www.msn.com/en-us/health/medical/who-infected-president-trump-this-genetics-tool-could-easily-pinpoint-the-source/ar-BB19StEr?ocid=msedgdhp