A Trump rally in Michigan on Friday, October 30, in Waterford, Michigan. | John Moore/Getty Images

The president is most likely a superspreader.

A study conducted by four Stanford University economic researchers determined that 18 Trump campaign rallies, the bulk of which took place over the past summer, “ultimately resulted in more than 30,000 incremental confirmed cases of COVID-19” and “likely led to more than 700 deaths.”

The study examined 18 counties that hosted Trump rallies in locations such as Tulsa, Oklahoma; Phoenix, Arizona; and Winston-Salem, North Carolina, held between June 20 and September 22. It then compared the rate of post-rally Covid-19 infections in the host counties to that of comparable counties that did not host a rally. Attendance at individual rallies varied, but Trump often draws thousands of supporters to these events.

“For the vast majority of county matching procedures we employ,”