The U.S. Centers for Disease Control and Prevention (CDC) has updated its guidance (also available in full below) regarding large group gatherings and events in light of the ongoing effort to combat the spread of coronavirus in the country.
https://techcrunch.com/2020/03/15/cdc-issues-new-guidance-against-gatherings-of-50-or-more-people-for-the-next-8-weeks/
https://techcrunch.com/2020/03/15/cdc-issues-new-guidance-against-gatherings-of-50-or-more-people-for-the-next-8-weeks/