Pseudomonas aeruginosa is a type of bacteria commonly found in soil, water, and various environments. It is known for its ability to thrive in diverse conditions, including those with low oxygen levels. This bacterium can cause infections, particularly in individuals with weakened immune systems, such as patients with cystic fibrosis or those in hospitals. The bacteria are resistant to many antibiotics, making infections difficult to treat. Pseudomonas aeruginosa can lead to serious health issues, including pneumonia and bloodstream infections. Its presence in healthcare settings highlights the importance of hygiene and infection control measures to prevent outbreaks.