Yeah, that’s true about contact tracing unfortunately. But OP was looking to have their case of Covid added to official counts, which is slightly different. They are still being done and get posted to places like:

https://www.nytimes.com/interactive/2021/us/covid-cases-deaths-tracker.html

https://covidactnow.org/us/new_jersey-nj/county/hudson_county/

What's the COVID risk in your area? CDC maps leave some people confused https://www.npr.org/sections/health-shots/2022/03/10/1085797307/cdcs-new-covid-metrics-can-leave-individuals-struggling-to-understand-their-risk

Flu version (like /u/pixel_of_moral_decay says below) Weekly US Map: Influenza Summary Update | CDC https://www.cdc.gov/flu/weekly/usmap.htm