Cumulative incidence and severity of AEs, SAEs, and lab abnormalities as a measure of safety and tolerability. 2 years [clinicaltrials_resource:2fb2273d736396ab98a80abd27ac538d]

The DAS181-F02 nebulized formulation includes 10mL of normal saline to prepare a liquid solution referred to as DAS181-F02 nebulized. Dry Powder Inhaled Dose: Non-ventilated subjects, capable of using a cyclohaler, will be treated by Dry Powder Inhalation. Each subject will receive a targeted daily dose of 10mg for 7 days for a total of 70mg of DAS181-F02. If a subject requires ventilation, the subject will be allowed to continue dosing following the Nebulized formulation instruction.

Cumulative incidence and severity of AEs, SAEs, and lab abnormalities as a measure of safety and tolerability. 2 years [clinicaltrials_resource:2fb2273d736396ab98a80abd27ac538d]

The DAS181-F02 nebulized formulation includes 10mL of normal saline to prepare a liquid solution referred to as DAS181-F02 nebulized. Dry Powder Inhaled Dose: Non-ventilated subjects, capable of using a cyclohaler, will be treated by Dry Powder Inhalation. Each subject will receive a targeted daily dose of 10mg for 7 days for a total of 70mg of DAS181-F02. If a subject requires ventilation, the subject will be allowed to continue dosing following the Nebulized formulation instruction.