A forty-year review of Rocky Mountain spotted fever cases in California shows clinical and epidemiologic changes
Fig 4
County of residence of RMSF cases, in 20-year reporting blocks, 1980–2019.
Counties included in the southern region are heavily outlined. Source for base-layer map: File:California counties outline map.svg—Wikimedia Commons (https://commons.wikimedia.org/wiki/File:California_counties_outline_map.svg#filelinks).
