I have been posting county-based Covid-19 information for about 16 months. My purpose was to compile the county data for my home county and the counties of my family members. Although my solo effort preceded the personalized county tracking applications of the NYT, I am happy to recognize their truly useful and accessible page for accomplishing essentially the same end. I admit to some envy for having a large data team like the NYT's to pull the data together and make some sense of the statistical trends! But I am retired and I am "doing my own research" for both interest and a break from other activities (LOL).
I recommend that you jump to the New York Times personalized page and following "your counties" there. It is easy on the NYT site to search for your counties and establish and updatable list. The NYT county data links are available using the map graphic (below) as a link.
I have pre-loaded "My Counties" data base views from the New York Times (and Johns Hopkins Univ) here: NY TIMES VIEW