Greene County topped 50 percent of its adult population this weekend, with at least one COVID-19 vaccine dose. Greene County is now at 50.4 percent according to the state's vaccine tracker website. Across the Hudson River, Columbia County is at 57.4 percent. Albany County leads locally, with 62.8 percent of its population with at least one dose. Ulster County is at 60.5 percent, Rensselaer County is at 56.1 percent, and Dutchess County is at 55.3 percent. Meanwhile, Schoharie County, at 45.8 percent, and Delaware County, at 44.3 percent, trail the Hudson Valley counties.