Klebsiella pneumoniae is a type of bacteria commonly found in the environment, particularly in soil and water. It is part of the normal flora of the human gut but can cause serious infections, especially in individuals with weakened immune systems. This bacterium is known for causing pneumonia, urinary tract infections, and bloodstream infections. In healthcare settings, Klebsiella pneumoniae can be a significant concern due to its ability to develop resistance to antibiotics. Infections caused by this bacterium can be difficult to treat, making prevention and control measures essential in hospitals and clinics to protect vulnerable patients.