Prion disease transmission: can we apply standard precautions to prevent or reduce risks?

ABSTRACT

Prion diseases present unique challenges to healthcare facilities, both in the care and treatment of patients. A significant cause for concern is in the routine reprocessing of medical devices used on patients and how disease transmission can be prevented on the reuse of devices. Investigations have shown that prion disease can be transmitted on medical devices, which can be a concern given the long incubation times associated with these diseases and that guidelines to control transmission only really apply in a small number of known or at risk cases. It is only recently that medical device-associated cleaning, disinfection and sterilization technologies have been investigated and the results of these studies are summarized in this report. The evidence would suggest that many simple decontamination steps can be applied to dramatically reduce the risks to patients, but the research has also given some surprises. Overall, it is reasonable to expect that standard precautions will be able to be applied both today as well as in the future to reduce the risk of prion disease transmission as well as the many other human pathogen concerns, although this may mean changes in some of our practices.