Ive been an oncology RN for 24yrs. Ive been tossed under the bus. Should I find a new job?

My unit closed shortly after we were bought out by another hospital. Long story, but we weren't making money. They told us on a 4 day notice to pick somewhere else to work in the hospital and gave us a list of job openings. Im going to retire in the next 10yrs and thought it would be ok... well, now they called to tell me I would be working on the Covid unit. Im 56yrs old, and have hypertension, heart disease, NIDDM, and I'm 50 lbs overweight. I don't wanna go to the covid floor... Is it me or did they just do a crap job on me? Should I just turn in my resignation?