Italy's fatality rate is about 5.86 times that of Germany's. What other than median age can be used to explain it?
| Cases | Deaths | Median Age | | |
| Germany | 119,624 | 2,607 | 47.1 | | |
| Italy | 147,577 | 18,849 | 45.5 | | |
I think you're not looking at population data correctly for this. 23% of Italy's population is over the age of 65; only Japan has a larger percentage of people over 65, at 28%. Germany's population is 21% over the age of 65.
But you are correct that there are other factors involved. Apparently, one big reason that Germany has such a low death rate is that it is testing something like 120,000 people a week, which means they're identifying a lot more mild cases with few or no symptoms. That changes the equation a lot. It's kinda like saying a higher percentage of people in hospitals die. It's true, but that's also because people are in the hospital BECAUSE they're seriously ill to start with. If you only factor in people who are in danger of dying, then the percentage of them that actually die is going to be higher than if you average in people who aren't even feeling sick.