You do know that epidemiologists are statisticians, right? They, um, don’t do experiments and never have and never will. They crunch numbers and fit them to models. Which is what they are doing.

If you want to see more data, well yes, so does everyone. What magic tool would you like people to use to get that data? As I explained above, we seem to have a shortage of swab tests to determine infection, and antibody tests only became available about a week ago, at which point people started to use them.

Not quite sure what more you are asking to be done here?