Can you explain the heart infections? How would someone get an infection all the way in the heart?

The blood stream. Delivers the bacteria; they take up residence on the heart valves, called "enocarditis." one of the classic causes of fever of unknown origin. Petechiae (pin point bleeding splinter subungual hemorrhage, osler nodes on the digits, and janeway lesions on the palms (non tender macula). Iv drugs # cause in 60's and 70's; now implanted catheters.