Diagnosis is by looking at a peripheral smear drawn during a febrile episode stained with Wright Stain. There can be low platelets. Abrupt fever once again can be seen with the nonspecific symptoms. By day 14 of the illness, one can see agglutinating antibodies to f. tularenesis. Most concentrated in Wisconsin, Menominee County in the UP, and out on the East coast.
Diagnosis made by history of tick bite in endemic area although only half remember the bite.
Vector is the dog tick. Vomiting can also occur. It is petechial and purpuric which begins on the trunk and spreads to the extremities and soles. Diagnosis is once again from history and epidemiologic awareness. Can be seen in elderly or chronically ill.