The state Department of Public Health has released its guidelines for Halloween. Here’s a link to their recommendations:
https://portal.ct.gov/DPH/Communications/Guidance/Connecticut-Halloween-Guidance
The state says their recommendations were based on the CDC’s advice. Here’s what they’re saying are HIGH RISK Halloween activities:
https://www.cdc.gov/coronavirus/2019-ncov/daily-life-coping/holidays.html?fbclid=IwAR3K9-PLKALrRPpTtwiIHJXecBTr7ngkOxspSHE0Ig4W74lDrQhhdfgKE8o#halloween