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Effective reproductive number (7-d average, left y axis) and reported cases (7-d average, right y axis) of region 1 to region 6 in Milwaukee County (left to right, top to bottom). The vertical lines indicate the starting date of state of Wisconsin Safer at Home Order, phase 2 reopening, phase 3 reopening, phase 4 reopening, and mask ordinance (from left to right).
