Brucellosis is a common zoonosis, caused by facultative intracellular, gram-negative rod-shaped bacteria. More than 500,000 new human cases are reported annually, and unreported cases are estimated to be 10 to 25 times more. It’s a treatable disease, mortality rates are low even in untreated patients (2%). Here we present three fatal conditions due to brucellosis in a case: severe aortic valve insufficiency related to infective endocarditis, hemorrhagic cerebral embolism, and alveolar hemorrhage. In this case, brucellosis, known as a chronic, treatable disease, resulted in death weeks after the first admission to the outpatient clinic in another hospital with the first symptoms associated with infective endocarditis. We present this case as it exemplifies the urgency and severity of the timing of valve surgeries required for infective endocarditis.