This is wrong. The only way to get 0.15 is by dividing dead over total cases - which is not the correct math since most people infected are still ongoing. You

This is wrong. The only way to get 0.15 is by dividing dead over total cases - which is not the correct math since most people infected are still ongoing. You have to divide dead over dead+recovered, and outside of China those numbers are still too small to get a reliable number. In China it is 2% outside Wuhan, but inside Wuhan it is over 4% since the medical system has broken down.