... respiratory tract was associated with clinical signs of acute COPD exacerbation, of pneumonia or of pulmonaryedema in all cases except in four patients, and virus influenzawas associated with acute ... COPD/asthma exacerbations, 11 cases of pul-monary edema, five aspirations, two cases of intraalveolarbleedings, one case of atelectasia, one pneumothorax, onepulmonary embolism and one case of ... used EPI-INFO version 6.04dfr software (EPI-INFO; CDC,Atlanta, GA, USA) for data collection, and used EPI-INFO andSAS version 9.1 software (SAS Institute Inc., Cary, NC, USA)for data analysis.ResultsPrevalence...