Health experts are urging those planning a holiday gathering with people they don’t live with to be extra cautious.

The director of the Centers for Disease Control and Prevention says the unvaccinated are the most vulnerable to COVID-19 and should consider gathering with family and friends who are following similar prevention measures.

“Holiday gatherings and risks of travel really have less to do with the airplane or car ride and much more to do with the airplane or car ride and much more to do with how people from different households behave in the weeks to days before meeting up,” Rochelle Walensky says.

Dr. Hugh Cassiere, of Northwell Health, says those who are feeling sick and haven’t been tested should not gather with others.

“Stay out of close spaces with poor ventilation, stay away from crowded places, stay away from close contact,” Cassiere says. “It’s really scary, but that’s just the fact unfortunately.”

The CDC says those who do test positive for the coronavirus people be fever free for 72 hours without having to take medication before surrounding themselves with others.

Those with symptoms like a cough should wait a week.

When patients do come out of isolation, they are advised to social distance.