Abstract: A mobile emergency hospital comprises a first wheeled trailer and a second wheeled trailer parked alongside the first trailer such that adjacent side walls of the first and second trailers are arranged to confront each other. The first and second trailers have patient care equipment associated with first and second portions of the emergency hospital, respectively. The adjacent side walls of the two trailers have openings which are generally aligned with each other to form one or more passageways through which caregivers pass between the two trailers. The first trailer may include a plurality of wall units arranged along a non-adjacent side wall of the first trailer. Each such wall unit may include a plurality of service connectors and a foldout bed. The trailers may include expandable sections to provide additional floor space.