Media caption Should I wear a mask to stop coronavirus?
The US government own coronavirus-prevention advice is that people should wear face coverings “in public settings where other social distancing measures are difficult to maintain”.
The Mayo Clinic itself requires all patients and visitors to its medical centers to wear a mask or face covering.
Mr Pence was accompanied by commissioner of the US Food and Drug Administration Dr Stephen Hahn, who wore a mask for the trip.
The visit came on the same day that the US coronavirus caseload topped one million and the number of deaths surpassed 405, ,
Asked by a reporter on Tuesday to explain why he did not wear a mask, the vice-president said he and everyone around him are regularly tested for the coron avirus.
“When the CDC issued guidelines about wearing a mask, it was their recognition that people that may have the coronavirus could prevent the possibility of conveying the virus to someone else by wearing a mask, “he said.
” And since I don’t have the coronavirus, I thought it would be a good opportunity for me to be here, to be able to speak to these researchers, these incredible healthcare personnel, and look them in the eye and say thank you. “
Mr Pence chose to forgo a Mask earlier this month while greeting Colorado Governor Jared Polis – who did don a facial covering – on their way to the Air Force Graduation ceremony.
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