LLOYD FLORIO, M.D., Dr. P.H.; EDWARD R. MUGRAGE, M.D., F.A.C.P.; MABEL O. STEWART
In 1930 Becker1 described a disease he called Colorado tick fever, which up to that time had been assumed to be a mild form of Rocky Mountain spotted fever. The only experimental basis for this differentiation was that he could not obtain symptoms nor the typical scrotal reaction of Rocky Mountain spotted fever in guinea pigs following inoculation of blood from these cases. In 1940 Topping, Cullyford and Davis2 undertook a systematic study of Colorado tick fever. They found it to be apparently associated with the bite of the wood tick, Dermacentor andersoni Stiles as postulated by Becker, but
FLORIO L, MUGRAGE ER, STEWART MO. COLORADO TICK FEVER1. Ann Intern Med. ;25:466–472. doi: 10.7326/0003-4819-25-3-466
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Published: Ann Intern Med. 1946;25(3):466-472.
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