[mrsmith]

If you want to go to that length, It’s appreciated- but unnecaesary.
I don’t think you can have a “case” without a test, except after death.

[amorphous]

Did a little bit of looking at what constitutes a "case". Apparently, as suspected, it varies. But then the large amount of data tends to average out the differences as usually happens. Some states overcount, some undercount. In the end most "cases" are symptomatic, most are lab validate, but some are diagnosed.

In conclusion, I think I'm right in my assumption that the great majority of cases, as reported, are symptomatic suffers who present for medical treatment. It's what CDC and other agencies around the world strive to use as a definition of those cases used to determine case fatality rates, not only for CV, but for influenza as well.