285. RMSF clinical features April 9th, 2008 by reuben in tick / lyme Back Top Tags: card 284. Area of the US most endemic for Rocky Mountain Spotted Fever (RMSF) / Rickettsia rickettsii like to invade which cellular structures? / What % patients have no exposure history? / Incubation period? / What % have no rash? 286. RMSF diagnostic strategies / Ddx / Complications Leave a Reply Cancel reply Please post any discussion to the emupdates Reddit page.