The first full day of fall is upon us and some people have already started thinking about one of the season's biggest holidays - Halloween.

On Tuesday, the Centers for Disease Control and Prevention (CDC) issued guidelines on how they say Americans should celebrate Halloween and Thanksgiving safely. 

The CDC says traditional trick-or-treating should be avoided this year to help prevent the spread of COVID-19. The agency on Tuesday deemed trick-or-treating a high-risk activity. 

They say costume masks should not be worn, unless it is made up of at least two layers of breathable fabric that covers the mouth and nose. They also advise against wearing costume masks over a cloth mask.

When it comes to Thanksgiving, the agency recommends people to have a small dinner with only those who live in your household.

Additionally, CDC officials say shopping in crowded stores on Black Friday should be avoided.

Moderate risk activities for Halloween include having individually wrapped goodie bags that are lined up for families to grab outside your home or an outdoor costume parade.

Some of the lower risk activities include carving pumpkins and doing a virtual costume contest.