MMWR: Idiopathic Pulmonary Fibrosis Mortality in the United States Idiopathic pulmonary fibrosis (IPF), a progressive lung disease characterized by scarring and worsening lung function, has a poor prognosis. An estimated 21% of IPF deaths might be attributable to occupational… https://t.co/FQpotKrgzR https://t.co/hruzwcD1E6