Rowanwitch "Nightingale hospitals were for step down and recovering patients, they would be staffed with the doctors and nurses brought back from retirement and military personnel. Not suitable for infection control cases as the are large open spaces. Cost is also a factor. You can't ask the retired staff to come back indefinitely because from experience in hospital bed management I know once those beds have been open a few months they will be relied on and cases will build up accordingly."
Not true according to the BMJ Rowan
https://www.hsj.co.uk/news/exclusive-details-of-nightingales-clinical-model-revealed/7027299.article
If all the people admitted were already infected with Covid then yes, special care would need to be taken by staff but surely viral infection control measures would not be so important as the plan was for only infected people to be admitted.