Immunosuppression. Immunosuppression is not listed in
guidelines as a health care-associated pneumonia risk factor;
however, multiple studies have included immunosuppression
as health care-associated pneumonia criteria.10,12,14
Within these studies, immunosuppression referred to a diverse
group of patients including, but not limited to, patients
with bone marrow or solid organ transplants, those found to
be infected with HIV, patients recently receiving treatment
for malignancy, and the use of certain immunosuppressive
medications.