Rocky Mountain spotted fever in relation to vegetation in the eastern United States, 1951-1971.
D001096:Arachnid Vectors; D004777:Environment; D006801:Humans; D010944:Plants; D012373:Rocky Mountain Spotted Fever / Q000453:epidemiology*; D013984:Tick Infestations / Q000453:epidemiology; D013987:Ticks; D014197:Trees; D014481:United States