While the novel coronavirus pandemic has interrupted many of annual traditions, it seems many families are dead-set on celebrating Halloween during quarantine, according to Good Housekeeping

A recent Harris Poll survey suggests that more than 70% of millennial moms are planning to make “the most” of Halloween with their families, with 80% of all surveyed saying that heading out to trick-or-treat is at the top of their list of things to do on Halloween.

In-person gatherings pose varying levels of risk, according to the Centers for Disease Control and Prevention. Event organizers and attendees should consider the risk of virus spread based on event size and use of mitigation strategies.

There are several factors that contribute to the risk of getting infected or infecting others with the virus that causes COVID-19 at a Halloween celebration.

If organizing a trick-or-treat outing, according to Good Housekeeping, independent health experts say these considerations should be front of mind.

Joining a big group of trick-or-treaters: Planning to team up with a group of friends to trick or treat this Halloween? Know that visiting people from another household or staying close together for hours on end brings with it a risk of transmission, especially in tight quarters where children can’t keep their masks on (no haunted houses this year!).

Face-to-face exposure: Keep interaction at any given doorway or front porch very brief, which means there’s less risk here. But the more households visited, the greater the chance that germs may be spread and linger — especially as others head from door to door, too.

Touching candy, toys, doors and other surfaces: It’s the least concerning risk for parents, as washing your hands frequently (or using hand sanitizer) can prevent little ones from carrying germs home. Parents should be concerned if their child is likely to rub their eyes, pick their nose, or put their fingers in their mouth while out and about with dirty hands.

The CDC recommends those planning on attending a Halloween party to consider the location of the gathering.

Indoor gatherings generally pose more risk than outdoor gatherings. Indoor gatherings with poor ventilation pose more risk than those with good ventilation, such as those with open windows or doors.

Gatherings that last longer pose more risk than shorter gatherings.

Gatherings with more people pose more risk than gatherings with fewer people.

CDC does not have a limit or recommend a specific number of attendees for gatherings. The size of a Halloween gathering should be determined based on the ability to reduce or limit contact between attendees, the risk of spread between attendees, and state and local health and safety laws, rules and regulations.

Parties with more preventive measures, such as mask wearing, social distancing, and hand washing, in place pose less risk than gatherings where fewer or no preventive measures are being implemented.