Supply problem.  We can no longer get proper PPE because of a panic-induced shortage.  Our current guidelines for the hospital I work at are that ear-loop masks are issued once per shift and are worn for the entire shift.  N95 respirators are used until they are no longer serviceable and are worn in high-risk areas and by those providing direct patient care.  I have had the same N95 for probably 2 weeks now.  We used to wear them once and then throw them away...