Are you an Epidemiologist? Neither am I, so our estimates are equally worthless. However, I am really fascinated by people on FR who blithely throw around figures like "about 5%" deaths, as though that were a GOOD THING!
Now, if the attack rate were 100%, a case fatality rate of "about 5%" would mean "about" fifteen MILLION dead Americans. Of course, no disease has an attack rate of 100%, so let's bring that down to a more realistic 10% for the entire country (much higher in some cities, lower in some rural areas). That still gives something like 1.5 MILLION deaths.