Containment of carbapenem-resistant Enterobacterales colonisations and infections: Results from an integrated infection control intervention in a large hospital trust of northern Italy.

We describe the results of an infection control intervention, implemented in 4 tertiary hospitals in Romagna, Italy, aiming at containing the spread of carbapenem-resistant Enterobacterales (CRE). The intervention consisted of rectal screening in patients at risk for CRE; pre-emptive contact precaution waiting for screening results; timely notification of CRE identification and concomitant computerized alert; contact precaution for confirmed CRE-positive patients. We performed an interrupted time series analysis to compare the incidence of CRE bacteraemia, of other CRE infections, and CRE-positive rectal swabs in the pre and postintervention period (January 2015-July 2017 and August 2017-June 2020, respectively). 4,332 CRE isolates were collected. Klebsiella pneumoniae was the most represented pathogen (n = 3,716, 85%); KPC production was the most common resistance mechanism (n = 3,896, 90%). The incidence rate of CRE bacteraemia significantly decreased from 0.554 to 0.447 episodes per 10.000 patient days in the early postintervention period (P =.001). The incidence rate of other CRE infections significantly decreased from 2.09 to 1.49 isolations per 10.000 patient days in the early postintervention period (P =.021). The monthly number of rectal swabs doubled in the postintervention period and there was a significant reduction trend of CRE-positive swabs, sustained over time (P <.001). The infection control intervention was successful in containing the spread of CRE infections and colonisations. • Italy is endemic for of carbapenem-resistant Enterobacterales (CRE). • In 2017 an infection control intervention was implemented in Romagna region. • The containment of CRE-related infections and colonisations was obtained. [ABSTRACT FROM AUTHOR]