Serologic test using ELISA assays are the gold standard used by the CDC
Most patients have antiviral IgM when symptoms are present, IgG may also be positive later on
Earliest lab abnormalities includes a decline in platelet count
May also see an elevation in LDH, LFTs, and lactate later
In HPS, the chest x-ray shows diffuse bilateral interstitial edema that may resemble ARDS
Decrease in albumin along with increases in H/H marks is a markeer of capillary leak in HPS
The diagnostic triad in HPS includes thrombocytopenia, left shifted granulocytes, and immunoblast >10% of total lympoid series
Physicians with Patients Presenting with Concerns or Symptoms of<unk>  Pulmonary Syndrome (HPS) after Visit to Yosemite National Park, June through August 2012.
Call 213-240-7941 (business hours) or 213-974-1234 (after hours) to speak to the duty physician.
Hantavirus
Wegener's granulomatosis
Coronavirus
Goodpasture's syndrome
Arbovirus
Psittacosis
Coxsackie virus
Anthrax 