Originally Posted by
username
With both the numerator and denominator uncertain, it is hard to pin down the exact number.
The fact is that humans have no immunity against this new virus so it will be tougher on us. On top of that, this thing transmits easily - people with no symptom can transmit it. Even at 0.5%, it is a lot. Therefore, we need to take it seriously.
I don't think that humans have no immunity--otherwise everyone who was infected would die without intervention. But currently it is serious enough to cause a panic even in light of the fact many recover on their own. Otherwise, home quarantine would be a death sentence.