The Centers for Disease Control Prevention on Monday encouraged people to wear masks to help reduce the spread of respiratory illnesses this season as Covid, flu and RSV circulate at the same time.

CDC Director Dr. Rochelle Walensky, in a call with reporters, said wearing a mask is one of several everyday precautions that people can take to reduce their chances of catching or spreading a respiratory virus during the busy holiday season.

“We also encourage you to wear a high-quality, well-fitting mask to prevent the spread of respiratory illnesses,” said Walensky, adding that people living in areas with high levels of Covid transmission should especially consider masking.