Q. On June 11, a 32-year-old hiker was bitten by a tick. After 2 week, he noticed an erythrematous ring at the location of the bite. Four weeks later, a physician found a large, macular, centrifugally spreading ring. Throughout the next month, it expanded to 35 cm and faded. More than the next 2.5 years, man experienced recurrent inflammation of a knee. Identify the periods of incubation, prodromal, illness, and decline. What is the etiology? What caused the symptoms? What treatment has to have been administered in July? What treatment must be administered 2 years later?