Time-series analysis of health care–associated infections in a new hospital with all private rooms.

Newer hospitals are usually designed with mostly private rooms, in contrast to the shared rooms present at older facilities. This study examined the effect of a move into a new hospital with entirely private rooms on health care–associated infection rates. While rates of colonization with several types of antibiotic-resistant bacteria decreased, the effect on infection rates was mixed (in particular, Clostridium difficile infection rates did not change).