4.8% is pretty alarming..! wouldn't there be an inherent bias, though, towards patients that display such severe symptoms that they would require medical care?

4.8% is pretty alarming..! wouldn't there be an inherent bias, though, towards patients that display such severe symptoms that they would require medical care? Currently, to me at least, these cases in Italy seem to indicate that plenty of cases go unnoticed because many of those infected show few to no symptoms (which makes this virus all the harder to isolate)