Virus infection in exacerbations of chronic obstructive pulmonary disease requiring ventilation.

Objectives: We aimed to characterise and quantify the incidence of common infectious agents in acute exacerbations of chronic obstructive pulmonary disease (COPD) requiring ventilation, with a focus on respiratory viruses.

Design: An epidemiological study conducted over 3 years.

Setting: A 12-bed intensive care unit (ICU).