👉 Bacteremia is a condition in which a person's body produces more bacteria than it can fight off, leading to inflammation and damage to tissues. It is caused by infections such as pneumonia or urinary tract infection, where bacteria invade the body through an opening like a hole, such as a puncture wound, or leaky internal organs like the lungs or kidneys. The body responds by producing antibodies that neutralize the bacteria, but it can also cause inflammation and damage to tissue.