Pseudomonas is a type of bacteria that is found commonly in the environment, often in places like soil and water. Of the many different types of Pseudomonas, the one that most often causes infections in humans is known as Pseudomonas aeruginosa according to the Centers for Disease Control and Prevention (CDC). It can cause infections in the blood, lungs and potentially other parts of the body., , , , While Pseudomonas aeruginosa lives in the natural environment, it can also sometimes b.