Enterobacter aerogenes is a nosocomial and pathogenic bacterium that causes opportunistic infections. It is a gram-negative, rod-shaped bacteria. E. aerogenes is generally found in the human gastrointestinal tract and does not generally cause disease in healthy individuals. It has been found to live in various wastes, hygienic chemicals, and soil. The majority are sensitive to antibiotics, though they can become resistant to standard antibiotics during treatment.

Enterobacter aerogenes is a notorious hospital-acquired infection. Some of the infections caused by E. aerogenes result from specific antibiotic treatments, venous catheter insertions, or surgical procedures. In addition to the general population, healthcare workers, especially those who are also intravenous drug abusers, should be considered subjects that could cause a transmission of E. aerogenes infection