How well do face masks protect against COVID-19? - Mayo Clinic

Face masks can help slow the spread of coronavirus disease 2019 (COVID-19). Learn about mask types, which masks to use and how to use them.

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Mayo Clinic asks all patients and visitors to wear surgical/procedural masks - Mayo Clinic News Network

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Mayo Clinic requires visitors to use medical-grade masks

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When and how to use masks

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COVID-19: How much protection do face masks offer? - Mayo Clinic News Network

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Trump calls for economy to reopen as he tours Arizona face-mask factory without a mask

Fact check: Wearing a face mask does not weaken the immune system