Room humidifiers as the source of Acinetobacter infections

Abstract
Twenty-four patients contracted systemic infections withAcinetobacter calcoaceticusduring a four-month period. Unheated room humidifiers at the patients' bedsides were implicated as the source of infection in six. The out-break was terminated with the removal of the humidifiers. (JAMA237:795-797, 1977)