Just saw this in the news: https://thehill.com/homenews/state-watch/515453-sturgis-motorcycle-rally-w

Just saw this in the news: Sturgis Motorcycle Rally was 'superspreading event' that cost public health $12.2 billion: analysis | TheHill and the paper (using SafeGraph data) is here: http://ftp.iza.org/dp13670.pdf