Yes, you may wear your KN95 masks. They are appropriate. The masks not allowed now are fabric masks which have so many variables that they’re unpredictable for protection. Some fabric masks are just one layer while others are 3 with filters.
So for right now the KN95 and N95 Masks are preferred. When you go return for you appt at Mayo, you’ll go through the checkpoint at the entrance. There they will also hand out appropriate masks for anyone not having one. No worries. ☺️

Here’s a link with all the details. https://www.mayoclinic.org/patient-visitor-guide/preparing-for-your-visit/covid-19-acceptable-face-masks

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