A 22-year-old male patient presented with several days history of fever and fatigue. On examination temperature 39, heart rate 120, bipod pressure 100/60, holosystolic murmur is heard best at the left sterna boarder that increases with inspiration. Blood works showed normocytic, normochromic anemia. CXR bilateral multiple shadows with cavitations. Echocardiogram showed vegetation at the tricuspid valve. What is the most likely explanation for these finding?