"Protect those not yet eligible for vaccination such as young children by getting yourself and other eligible people around them vaccinated," the CDC noted in guidance issued late Friday afternoon.

The latest guidance presents a less restrictive view of the holiday gatherings as two-thirds of Americans have received at least one dose of the Covid-19 vaccines.

Anthony Fauci, director of the National Institute of Allergy and Infectious Diseases, said vaccinated Americans should feel comfortable celebrating Halloween and other upcoming seasonal festivities.

Friday's guidance mirrored much of what Fauci said about Halloween: that eligible Americans should get vaccinated and that outdoor activities are safer than indoor events.

"Because many generations tend to gather to celebrate holidays, the best way to minimize Covid-19 risk and keep your family and friends safer is to get vaccinated if you’re eligible," it said.

"I encourage people, particularly the vaccinated people who are protected, to have a good, normal Christmas with your family," he later said.