Pseudomonas Aeruginosa: Infection of pseudomonas Aeruginosa: Diagram : A Pseudomonas infection is a sickness caused by specific strains (types) of Pseudomonas bacteria. Pseudomonas aeruginosa (P. aeruginosa) is the most common cause of human illnesses. P. aeruginosa is most typically found in the environment, including water, plants, and soil. However, it also emerges in moist or wet environments such as bathtubs or sinks. It may be on your skin as well, although it is unlikely to cause an illness. Healthcare professionals refer to phenomenon as bacterial colonization. S erious Form of Pseudomonas Aeruginosa Infection: It depends. People with a good immune system are unlikely to develop a Pseudomonas aeruginosa infection. However, it can be dangerous and even fatal if you have a damaged immune system (immunocompromised). Common causes of a compromised immune system are: Autoimmune diseases include lupus and rheumatoid arthritis. Cancer. Cy...