Fig. 1.

Comparison of signs & symptoms of CF pulmonary exacerbations in patients with viral and non-viral exacerbations. Blue columns indicate patients with viral exacerbations, and red columns indicate patients with non-viral exacerbations. * indicates exacerbation criteria where the difference in the two groups was statistically significant. Those patients with virus-triggered exacerbations experienced significantly less dyspnea (p = 0.009), and were less likely to have a decreased exercise tolerance (p = 0.0195) or new findings on respiratory exam (p = 0.0147).