Since price is a function of both supply and demand it doesn’t necessarily follow that it’s one curve or another. There are several factors at play including: enhanced demand (you get this every severe flu season too), parenting issues (due to disruptions in school and childcare), perceived risk—->risk premium, the discomfort of the job (masks all day, unpleasant work environment), extended unemployment benefits, and the fact shortages exist in other parts of the market because doctors offices are having trouble holding onto their nurses too (most nurses remember are women which means a large chunk have primary childcare responsibility or are old enough to be Leary of working emergency wards)