California health officials discovered evidence of measles in routine wastewater testing as the state faces a sharp resurgence of the disease. The Merced County Department of Public Health reported the finding, and while no confirmed clinical cases have been identified in the county, officials said it could indicate undetected circulation. The state has confirmed infections climbing to 74 cases across seven counties, the highest annual total California has recorded in seven years. Health officials said the jump is already far above last year’s numbers, with just 25 cases reported in all of 2025, underscoring how quickly the virus has regained...