Methods: This was a quasi-experimental study in the South Texas Veterans Health Care System (STVHCS), San Antonio, TX from 2011 to 2018. The PX-UV system was implemented beginning January 1, 2013. HO-CDI rates were calculated as CDI cases per 10,000 patient-days. Rates were compared between the pre-PX-UV period (2011-2012) and post-PX-UV period (2013-2018) using the conditional maximum likelihood estimate of rate ratio. The association between number of beds cleaned and HO-CDI incidence was evaluated using Pearson correlation.
During the 2-year pre-intervention period, the HO-CDI rate was 9.09 per 10,000 patient-days compared to 9.44 per 10,000 patient days in the post-intervention period (RR 1.038; 95% CI 0.817 – 1.328) (p=0.7703). HO-CDI rates peaked in 2015 (13.60 per 10,000) and declined steadily thereafter through 2018 (6.86 per 10,000). There was not a significant correlation between number of beds cleaned and HO-CDI incidence (R=0.3713; 95% CI -0.0597 – 0.6856; p=0.0889).
Conclusion: PX-UV disinfection did not significantly reduce HO-CDI rates in the first 5 years of use; however, more recent data demonstrate HO-CDI rates lower than that of the pre-intervention period.
K. R. Reveles, None
C. Dickerson, None