Investigation of a respiratory disease associated with an air-conditioning system


Dr C. A. C. Pickering, Department of Clinical Immunology, Cardiothoracic Institute, Brompton, London SW3 6HP.


This paper describes the investigation of respiratory disease presenting in a group of men employed on the printing floor of a factory. The air-conditioning units supplying this floor were found to be contaminated with a variety of micro-organisms. The specific cause of the disease was not identified but an alteration in the system of humidification led to the complete resolution of symptoms.