I don't think you can lump everything together
Why not? Do you think the number of previously recorded deaths will suddenly decrease because we've found a better treatment? These people died, they should be included in the statistics.
Why not? Do you think the number of previously recorded deaths will suddenly decrease because we've found a better treatment? These people died, they should be included in the statistics.
The main question for me is if someone who got Covid and recovered can get sick again. I haven't seen any answer for that question I could trust. There are some headlines from time to time "got Covid again after recovery", but given the quality of media reporting it means nothing.
I should have added that I think it depends on what the creator of the graphics/information is trying to show. If it's a pure death rate comparison, then sure you could lump everything together.
However, if you want to show a more real-time comparison, you choose to segment the data based on time.