Factors responsible for the development of multidrug resistant pneumonia are all, EXCEPT:

Factors responsible for the development of multidrug resistant pneumonia are Widespread use of potent oral antibiotics Earlier transfer of patients out of acute-care hospitals to their homes or various lower-acuity facilities Increased use of outpatient IV antibiotic therapy General aging of the population More extensive immunomodulatory therapies Ref: Harrison, E-18, P-2130.