In parts of the country where COVID-19 continues to fill hospitals, a rotating cast of traveling nurses helps keep intensive care units fully staffed. Hospitals have to pay handsomely to get that temporary help, and those higher wages are tempting some staff nurses to hit the road, too. Nearly two years into the pandemic, there’s some truth in a joke circulating among frustrated ICU nurses: They ask their hospitals for appropriate compensation for the hazards they’ve endured. And the nurses are rewarded with a pizza party instead. Theresa Adams said that’s what happened at the Ohio hospital where she worked. The facility across town was offering bonuses to keep its nurses from leaving, but not hers. They got a pizza party. “I heard a lot of noise about ‘Well, this is what you signed up for.’ No, I did not sign up for this,” she said of the unparalleled stress …