30. T.M., a 33-year-old man, has a history of intravenous drug abuse and lives in and out of homeless shelters. He is taken to the emergency department by ambulance after experiencing paralysis on the right side of his body. The people at the shelter thought he might be having a stroke. In the emergency department, a laboratory profile was performed, which was positive for the Venereal Disease Research Laboratory test (syphilis test) with 10 white blood cells per cubic millimeter. T.M. has no known significant medical history (except for treatment of a sexually transmitted disease [STD]), but he is allergic to penicillin (anaphylactic reaction). Which therapy is best for T.M.?
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