In one study, nearly a third of "A. terreus" infections in hospitals were found to be associated with the presence of potted plants. Elimination of potted plants in the rooms of immunodeficient patients may have a role in prevention of illness. "A. terreus" has also been described in many studies as common to the hospital setting because of outside hospital construction and renovations. The amount of soil and debris reintroduced into the air is capable of travelling through the air and infecting immunosuppressed patients. A simple way to take preventive action is to provide good air filtration and ventilation throughout the hospital rooms. Elimination of inoculum is key to the prevention of nosocomial infection by "A. terreus".