My wife was issued one N95 mask. She uses that same mask all day when rounding on COVID-19 patients. For non-COVID-19 patients, she is supposed to use a lesser level 2 surgical type mask. Then she turns her one N95 in to be UV sterilized at the end of her shift. At the start of her next shift, she gets her same N95 mask back.

I certainly HOPE that UV sterilization works!!!