- Difference in the incidence of Clostridium difficile among patients infected with human immunodeficiency virus admitted to a public hospital and a private hospital. Pulvirenti, J.J., Gerding, D.N., Nathan, C., Hafiz, I., Mehra, T., Marsh, D., Kocka, F., Rice, T., Fischer, S.A., Segreti, J., Weinstein, R.A. Infection control and hospital epidemiology : the official journal of the Society of Hospital Epidemiologists of America. (2002)