Incubation of 1-8 weeks after exposure to source
Early symptoms are nonspecific and includes fever, fatigue, myalgia, and headache
May also exhibit abdominal pain, nausea, vomiting, and diarrhea
Thrombocytopenia results in petechiae, ocular bleeding
Develops several days later, including shortness of breath and cough which rapidly progresses to noncardiogenic pulmonary edema and respiratory failure over 24-48 hours
Hemodynamical instability may ensue in the late phase
Symptoms that make HPS less likely includes conjunctival injection, petechiae, or rashes
Hantavirus
Wegener's granulomatosis
Coronavirus
Goodpasture's syndrome
Arbovirus
Psittacosis
Coxsackie virus
Anthrax 