The Public Health Branch focuses on community-wide prevention of communicable disease, chronic disease, injury, substance abuse, suicide prevention and the prevention of Adverse Childhood Experiences (ACE). Public Health helps the community develop systems, and policies that support healthy behaviors. It promotes nutrition and physical activity, healthy aging, worksite wellness and educational attainment. Public Health also maintains an active emergency response unit, and its laboratory provides testing services for Shasta and numerous other Northern California counties.