Incubation period between 2 and 12 days (usually 2 to 7)
Onset: Fever, " which is often high, sometimes associated with chills and rigors and sometimes accompanied by other symptoms including headache, malaise, and myalgias. At the onset of illness, some cases have mild respiratory symptoms. Typically, rash and neurologic or gastrointestinal findings are absent, although a few patients have reported diarrhoea during the febrile prodrome."
3\x967 days: "onset of a dry, non- productive cough or dyspnea", in 10%-20% of cases, this is severe enough to require assisted breathing
"At present, the most efficacious treatment regime, if any is unknown."