Surprised to see this comment come so late. It's true. The regular hospitals were hotbeds for covid infections, so it made sense to keep the non-covid patients

Surprised to see this comment come so late. It's true. The regular hospitals were hotbeds for covid infections, so it made sense to keep the non-covid patients as separate as possible from the covid ones. Hence, the field hospitals. It would be terrible to come into the hospital with a broken bone and come out of it with the virus. It makes sense to avoid transporting infected patients whenever possible because it could lead to a new outbreak in a different location.