Addenbrookes hospital in Cambridge (UK) have recently performed a point prevalence survey for antibiotic resistant bacteria. None of 540 patient samples grew CPE, but 130 (24%) grew VRE. So, why no CPE but so much VRE?
by Andreas Voss and Eli Perencevich,
During the recent ICPIC 2017 and a pre-meeting think tank, the sense and non-sense of RCTs looking at various infection control measures was a major point of discussion during many sessions. Data from well-designed quasi-experimental studies, epidemiological evidence, and logic seems to vanish, whenever a new RCT is published, even if the results are not applicable to situations that are non-endemic, have higher or lower compliance with the preventive measures in question, or whether the intended measures were actually applied within the intended patient group. Some studies seem to assume that the transmission during the first days of admission are of no consequence. Others assume that given endemicity and a high patient load, the intended measures such as single-room isolation can’t be applied, even if a patient was randomized to receive those measures.
A brave study from the Palmore/Frank group at NIH has opened the Pandora’s Box that is screening staff for MDROs, and, I’m delighted to say, firmly closed it with their findings! Only 3% of staff carried ESBLs, one carried a CPE, and none carried VRE, and this despite extensive contact with MDRO patients for many of the staff sampled!
It is great to see the long-awaited ‘Benefits of Terminal Room Disinfection’ (BETR-D) randomised controlled trial of a UVC automated room decon (ARD) system published, in the Lancet, no less! This study firms up the importance of environmental contamination in transmission, and demonstrates additional benefit of UVC over and above enhanced conventional methods for VRE, maybe for MRSA, but not for C. difficile.
What do you do to prevent VRE transmission?
…you are not alone, if the answer to this question is ‘nothing special’, based on survey published in ARIC! Dale Fisher’s team in Singapore put together a simple survey, asking the global IPC community what measures they have in place to prevent the transmission of VRE. There was a huge degree of variability, ranging from ‘nothing special’ to ‘the kitchen sink’!