CDC expected to relax guidance on wearing masks outdoors CDC expected to relax guidance on wearing masks outdoors President Joe Biden’s top coronavirus advisor hinted that on Tuesday, the CDC will relax the guidance on mask wearing outdoors. "When you look around at the common sense situation, obviously, the risk is really very low, particularly if you are vaccinated," said Chief COVID-19 Advisor Doctor Anthony Fauci. President Joe Biden’s top coronavirus advisor hinted that on Tuesday, the CDC will relax the guidance on mask wearing outdoors. The announcement may have different rules, however, for people who have been vaccinated and for those who haven't.