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Administration of antibiotics may have caused successive outbreaks of vancomycin-resistant enterococci (VRE) in a Greek neonatal intensive care unit (NICU), according to a study in the October issue of the American Journal of Infection Control, the official publication of the Association for Professionals in Infection Control and Epidemiology (APIC).
A team of physicians at the Aristotle University School of Medicine in Greece responded to two occurrences of VRE in their 44-bed NICU with a bundled intervention of active surveillance, enhanced infection control measures, optimization of antimicrobial usage, and investigation of potential risk factors for VRE colonization over a six-month period. Out of 253 newborns screened, 39.9 percent were found to be carriers of VRE. During the first wave of this outbreak a single clone predominated.
Antimicrobial usage, particularly administration of vancomycin and other glycopeptide antibiotics, was reduced significantly until the outbreak appeared to be over. Just as antimicrobial usage returned to previous levels, a new case of VRE was discovered and a second wave of the outbreak began.
Analysis of the data revealed antimicrobial treatment for late-onset neonatal sepsis and hospitalization during the outbreak as significant risk factors for VRE.
The authors conclude, "Both a high prevalence of VRE colonization and antimicrobial use promoted the transmission of VRE during this biphasic outbreak. Adherence to infection control measures and antimicrobial stewardship policies are of utmost importance."
Enterococci can cause serious healthcare-associated infections in adults, children, and neonates. Vancomycin-resistant enterococci are resistant to vancomycin, the drug often used to treat serious infections for which other medicines may not work. Each year an estimated 20,000 hospitalized U.S. patients become infected with VRE, leading to approximately 1,300 deaths, according to a recent report on antibiotic resistance issued by the Centers for Disease Control and Prevention (CDC).
According to the CDC, the most important action needed to slow the spread of antibiotic-resistant infections is to improve the use of antibiotics. The CDC warns that using antibiotics when they are not needed can lead to the development of antibiotic resistance and can increase a patient's risk of developing a resistant infection in the future.
Article adapted by Medical News Today from original press release. Click 'references' tab above for source.
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Sciences, Elsevier Health. "Link between antimicrobial therapies and neonatal infection outbreaks." Medical News Today. MediLexicon, Intl., 3 Oct. 2013. Web.
4 Dec. 2013. <http://www.medicalnewstoday.com/releases/266908>
Sciences, E. (2013, October 3). "Link between antimicrobial therapies and neonatal infection outbreaks." Medical News Today. Retrieved from
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