New COVID19-Related Deaths and 7-Day Moving Average in Henderson. Data provided by Southern Nevada Health District. This snapshot provides data managed by the Nevada Department of Health and Human Services, Division of Public and Behavioral Health, Immunization Program for Clark County, NV, and assessed by the Southern Nevada Health District’s Office of Epidemiology and Disease Surveillance. Data for this measure has been provided intermittently. As a result, gaps may occur. Due to delays in processing and reporting, data from the most recent date is less complete than older dates. Data is preliminary and subject to change.