I see you have flu-like symptoms & a red bull's-eye rash; it could be this tick-borne illness first identified in 1975
[DOC] [TLE] Lyme Disease - Illinois Department of Public Health [PAR] It was first recognized in the United States in 1975 after a mysterious outbreak ... 
Lyme disease is transmitted by the bite of an infected deer tick, which also is ... A 
ring-like red rash occurs in about 70 - 80 percent of cases and begins ...