Marin County is well-positioned to safely relax its shelter-in-place order. Over the past month, the number of Covid-19 tests has quadrupled, while the number of positive cases has only doubled. Hospitalizations remain stable, at around four patients. The county has met its goal of 500 daily tests for most of the past week, and 80 volunteers with the new Marin Medical Reserve Corps are ready to be trained in tracing the contacts of positive patients.…