Antimicrobial Therapies Linked to Neonatal Infection Outbreaks
Antimicrobial Therapies Linked to Neonatal Infection Outbreaks
Washington, DC, October 1, 2013 – 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 (www.cdc.gov/drugresistance/threat-report-2013) 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.
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Notes for editors
“Vancomycin-resistant Enterococcus outbreak in a neonatal intensive care unit: Epidemiology, molecular analysis, and risk factors,” by Elias Iosifidis, Ioanna Evdoridou, Eleni Agakidou, Elpis Chochliourou, Efthimia Protonotariou, Konstantina Karakoula, Ioannis Stathis, Danai Sofianou, Vassiliki Drossou-Agakidou, Spyros Pournaras, and Emmanuel Roilides appears in a special issue on pediatrics of the American Journal of Infection Control, Volume 41, Issue 10 (October 2013).
Authors
Elias Iosifidis, MD
Third Department of Pediatrics, Aristotle University School of Medicine, Hippokration General Hospital, Thessaloniki, Greece
Ioanna Evdoridou, MD, PhD
First Department of Neonatology and Neonatal Intensive Care Unit, Aristotle University School of Medicine, Hippokration General Hospital, Thessaloniki, Greece
Eleni Agakidou, MD
First Department of Neonatology and Neonatal Intensive Care Unit, Aristotle University School of Medicine, Hippokration General Hospital, Thessaloniki, Greece
Elpis Chochliourou, MD, PhD
First Department of Neonatology and Neonatal Intensive Care Unit, Aristotle University School of Medicine, Hippokration General Hospital, Thessaloniki, Greece
Efthimia Protonotariou, MD, PhD
Department of Microbiology, Aristotle Hippokration General Hospital, Thessaloniki, Greece
Konstantina Karakoula, MD
Department of Microbiology, Aristotle Hippokration General Hospital, Thessaloniki, Greece
Ioannis Stathis, RN, MSc
Infection Control Team, Hippokration General Hospital, Thessaloniki, Greece
Danai Sofianou, MD, PhD
Department of Microbiology, Aristotle Hippokration General Hospital, Thessaloniki, Greece
Vassiliki Drossou-Agakidou, MD, PhD
First Department of Neonatology and Neonatal Intensive Care Unit, Aristotle University School of Medicine, Hippokration General Hospital, Thessaloniki, Greece
Spyros Pournaras, MD, PhD
Department of Microbiology, University of Thessaly School of Medicine, Larissa, Greece
Emmanuel Roilides, MD, PhD, FIDSA (Corresponding Author)
Third Department of Pediatrics, Aristotle University School of Medicine, Hippokration General Hospital, Thessaloniki, Greece
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