HGA and the Boldt Company’s prefabricated modules can be attached to hospitals to handle COVID-19 patients.

This is an excerpt from WIRED.com.
It’s easier to envision the ideal space for infectious disease patients than to build and fund one in the midst of a pandemic. A stopgap solution may be prefabricated modules like those built by the architecture firm HGA and the construction company Boldt. The units are designed to be placed next to hospitals, as additions, or as standalone field hospitals. They come equipped with specialized stations for workers to safely put on and remove protective equipment; controls for patient’s IV pumps reach into corridors, so workers can monitor them without entering patients’ rooms.