"The annual incidence of AE-IPF has been reported at around 5-15% on one publication 6, and is considered is less common in mild disease."
"Acute exacerbation of interstitial lung disease (AE-ILD), which sometimes also encompasses acute exacerbation of idiopathic pulmonary fibrosis (AE-IPF), is an acute, clinically significant deterioration which develops within less than 1 month without an obvious clinical precipitant such as fluid overload, infection, left heart failure, or pulmonary embolism 2,7."