Fever, Cough, and Respiratory Failure

A 25 M presents after a recent trip to the southwestern USA. During the trip, he went hiking at the Grand Canyon & Zion National Park, and he stayed in a cabin. He noticed some mouse 🐁 droppings in one of the corners and swept the area aggressively. 2 weeks later, he presents with fever, cough, and dyspnea with rapid progression to pulm edema.

What is on your DDx? What is the the most likely diagnosis? (Click page 2 for the answer!)

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