There was an interesting contact tracing case study where two busses took the same trip, one with a coronavirus carrier: https://www.sltrib.com/news/2020/04/24/

There was an interesting contact tracing case study where two busses took the same trip, one with a coronavirus carrier: https://www.sltrib.com/news/2020/04/24/what-you-need-know-about/ https://www.sltrib.com/news/2020/04/24/what-you-need-know-ab... (about halfway down the page)