Question: How do I know if I should cancel an event?

Answer passage (source: CDC):
page_title: Event Planning and COVID-19: Questions and Answers
section_headers: Planning and Preparedness
What are things to consider when determining if an event needs to be postponed or canceled?
section_content: Consult with local public health officials and continually assess, based on
current conditions, whether to postpone, cancel, or significantly reduce the
number of attendees (if possible) at an event or gathering. When determining
if you should postpone or cancel a large gathering or event, consider the:

Overall number of attendees or crowd size.
Number of attendees who are at higher risk of developing serious illness from COVID-19. This includes older adults and people with underlying health problems such as lung or heart disease and diabetes.
How close together attendees will be at the event.
Potential ways to minimize economic impact to attendees, staff, and the local community.
Amount of spread in local community and the communities from where your attendees are likely to travel.
Needs and capacity of the local community to host or participate in your event.


Reviewer feedback on this answer:
Gives fairly detailed guidance on which events aren't safe.
This answer suggests talking with public health officials and gives a run down of what to consider, so I would say this is an excellent answer.

Reviewer ratings:
Excellent
Excellent

Answer passage (source: CDC):
page_title: Event Planning and COVID-19: Questions and Answers
section_headers: Confirmed cases of COVID-19 in the community
Do I need to cancel an event if there are confirmed cases of COVID-19 in the community?
section_content: If there is minimal or moderate spread of COVID-19 in the community, CDC
recommends cancelling an:

event that includes 250 people or more. 
3/29/20 UPDATE: The President’s Coronavirus Guidelines for America—Slow the Spread of Coronavirus (COVID-19): 
More Information on Mass Gatherings
Read the White House noticepdf iconexternal iconpdf iconexternal icon


event likely to have 10 or more people who are at higher risk of serious COVID-19 illness. This includes older adults and people with underlying health problems such as lung or heart disease and diabetes.

If there is substantial spread of COVID-19 in the community, CDC recommends
cancelling events of any size. See guidance for definitions of minimal,
moderate, and substantial spreadpdf iconpdf
icon.

Reviewer feedback on this answer:
Gives clear, specific advice about which events should be canceled.
This answer describes what to do with events if there is a spread in the community.

Reviewer ratings:
Excellent
Excellent

Answer passage (source: CDC):
page_title: FAQs for Administrators and Leaders at Community- and Faith-Based Organizations
section_headers: Substantial spread of COVID-19 in the local community
Should my organization cancel or postpone an event if there is substantial spread of COVID-19 in the local community?
section_content: You should first follow the directions of your state and local authorities. If
authorities do not have specific directions related to cancelling or
postponing a group event or activity, read CDC guidance on community
events.

Reviewer feedback on this answer:
Doesn't have detailed guidelines but does link to them.
While this answer does discuss cancelling events, it does not specify whether an individual should or should not.

Reviewer ratings:
Acceptable
Acceptable