"We saw a need for a site that people could find Covid-19 test locations"
I'm curious what data/feedback you used to conclude this need existed. I haven't seen any news articles that say the bottleneck is knowledge of locations. As many others have pointed out, the issue is with healthcare staff safety, test supplies, etc.
If you end up looking for a pivot, perhaps you could convert this into a map of locations where people could safely donate their excess supplies of masks, etc that they're holding onto unnecessarily. That could contribute to the problem of lack of supplies for healthcare workers.
https://www.kxan.com/news/coronavirus/masks-gloves-and-therm...