Outbreak of Multidrug-Resistant Serratia marcescens Infection in a Neonatal Intensive Care Unit

2008 ◽  
Vol 29 (5) ◽  
pp. 418-423 ◽  
Author(s):  
Lisa L. Maragakis ◽  
Amy Winkler ◽  
Margaret G. Tucker ◽  
Sara E. Cosgrove ◽  
Tracy Ross ◽  
...  
Keyword(s):  
Intensive Care ◽  
Serratia Marcescens ◽  
Medical Records ◽  
Neonatal Intensive Care ◽  
Case Control Study ◽  
Multidrug Resistant ◽  
Case Control ◽  
Outbreak Investigation ◽  
Case Identification ◽  
Control Study

Background.Serratia marcescens causes healthcare-associated infections and significant morbidity and mortality in neonatal intensive care units (NICUs). We report the investigation and control of an outbreak of multidrug-resistant (MDR) S. marcescens infection at an NICU.Methods.An outbreak investigation and a case-control study were undertaken at a 36-bed NICU in a tertiary care hospital in Baltimore, Maryland, for the period from October 2004 through February 2005. The outbreak investigation included case identification, review of medical records, environmental cultures, patient surveillance cultures, personnel hand cultures, and pulsed-field gel electrophoresis (PFGE). The case-control study included case identification and review of medical records. Infection control measures were implemented. Eighteen NICU neonates had cultures that grew MDR S. marcescens during the study period. The case-control study included 16 patients with the outbreak strain or an unidentified strain of MDR S. marcescens and 32 control patients not infected and/or colonized with MDR S. marcescens, treated in the NICU for at least 48 hours during the study period.Results.PFGE analysis identified a single strain of MDR S. marcescens that infected or colonized 15 patients. Two patients had unique strains, and 1 patient's isolate could not be subtyped. An unrelated MDR S. marcescens isolate was recovered from a sink drain. Exposure to inhalational therapy was an independent risk factor for MDR S. marcescens acquisition after adjusting for birth weight. Extensive investigation failed to reveal a point source for the outbreak.Conclusion.A single epidemic strain of MDR S. marcescens spread rapidly and threatened to become endemic in this NICU. Transient carriage on the hands of healthcare personnel or on respiratory care equipment was the likely mode of transmission. Cohorting patients and staff, at the cost of bed closures and additional personnel, interrupted transmission and halted the outbreak.

scholarly journals The Acquisition of Multidrug-Resistant Bacteria in Patients Admitted to COVID-19 Intensive Care Units: A Monocentric Retrospective Case Control Study

2020 ◽  
Vol 8 (11) ◽  
pp. 1821
Author(s):  
Elisa G. Bogossian ◽  
Fabio S. Taccone ◽  
Antonio Izzi ◽  
Nicolas Yin ◽  
Alessandra Garufi ◽  
...  
Keyword(s):  
Intensive Care ◽  
Risk Analysis ◽  
Case Control Study ◽  
Multidrug Resistant ◽  
Case Control ◽  
Incidence Density ◽  
Resistant Bacteria ◽  
Competing Risk Analysis ◽  
Multidrug Resistant Bacteria ◽  
Control Study

Whether the risk of multidrug-resistant bacteria (MDRB) acquisition in the intensive care unit (ICU) is modified by the COVID-19 crisis is unknown. In this single center case control study, we measured the rate of MDRB acquisition in patients admitted in COVID-19 ICU and compared it with patients admitted in the same ICU for subarachnoid hemorrhage (controls) matched 1:1 on length of ICU stay and mechanical ventilation. All patients were systematically and repeatedly screened for MDRB carriage. We compared the rate of MDRB acquisition in COVID-19 patients and in control using a competing risk analysis. Of note, although we tried to match COVID-19 patients with septic shock patients, we were unable due to the longer stay of COVID-19 patients. Among 72 patients admitted to the COVID-19 ICUs, 33% acquired 31 MDRB during ICU stay. The incidence density of MDRB acquisition was 30/1000 patient days. Antimicrobial therapy and exposure time were associated with higher rate of MDRB acquisition. Among the 72 SAH patients, 21% acquired MDRB, with an incidence density was 18/1000 patient days. The septic patients had more comorbidities and a greater number of previous hospitalizations than the COVID-19 patients. The incidence density of MDRB acquisition was 30/1000 patient days. The association between COVID-19 and MDRB acquisition (compared to control) risk did not reach statistical significance in the multivariable competing risk analysis (sHR 1.71 (CI 95% 0.93–3.21)). Thus, we conclude that, despite strong physical isolation, acquisition rate of MDRB in ICU patients was at least similar during the COVID-19 first wave compared to previous period.

Risk Factors for Staphylococcus aureus Acquisition in the Neonatal Intensive Care Unit: A Matched Case-Case-Control Study

2017 ◽  
Vol 39 (1) ◽  
pp. 46-52 ◽  
Author(s):  
Matthew C. Washam ◽  
Andrea Ankrum ◽  
Beth E. Haberman ◽  
Mary Allen Staat ◽  
David B. Haslam
Keyword(s):  
Risk Factors ◽  
Intensive Care Unit ◽  
Staphylococcus Aureus ◽  
Intensive Care ◽  
Neonatal Intensive Care ◽  
Case Control Study ◽  
Case Control ◽  
Entire Cohort ◽  
Matched Case ◽  
Control Study

OBJECTIVETo determine risk factors independent of length of stay (LOS) for Staphylococcus aureus acquisition in infants admitted to the neonatal intensive care unit (NICU).DESIGNRetrospective matched case–case-control study.SETTINGQuaternary-care referral NICU at a large academic children’s hospital.METHODSInfants admitted between January 2014 and March 2016 at a level IV NICU who acquired methicillin resistant (MRSA) or susceptible (MSSA) S. aureus were matched with controls by duration of exposure to determine risk factors for acquisition. A secondary post hoc analysis was performed on the entire cohort of at-risk infants for risk factors identified in the primary analysis to further quantify risk.RESULTSIn total, 1,751 infants were admitted during the study period with 199 infants identified as having S. aureus prevalent on admission. There were 246 incident S. aureus acquisitions in the remaining at-risk infant cohort. On matched analysis, infants housed in a single-bed unit were associated with a significantly decreased risk of both MRSA (P=.03) and MSSA (P=.01) acquisition compared with infants housed in multibed pods. Across the entire cohort, pooled S. aureus acquisition was significantly lower in infants housed in single-bed units (hazard ratio,=0.46; confidence interval, 0.34–0.62).CONCLUSIONSNICU bed design is significantly associated with S. aureus acquisition in hospitalized infants independent of LOS.Infect Control Hosp Epidemiol 2018;39:46–52

Pseudomonas aeruginosa Outbreak in a Neonatal Intensive Care Unit Attributed to Hospital Tap Water

2017 ◽  
Vol 38 (7) ◽  
pp. 801-808 ◽  
Author(s):  
Cara Bicking Kinsey ◽  
Samir Koirala ◽  
Benjamin Solomon ◽  
Jon Rosenberg ◽  
Byron F. Robinson ◽  
...  
Keyword(s):  
Intensive Care Unit ◽  
Intensive Care ◽  
Neonatal Intensive Care Unit ◽  
Gel Electrophoresis ◽  
Neonatal Intensive Care ◽  
Case Control Study ◽  
Case Control ◽  
Pulsed Field Gel Electrophoresis ◽  
Point Of Use ◽  
Control Study

OBJECTIVETo investigate an outbreak of Pseudomonas aeruginosa infections and colonization in a neonatal intensive care unit.DESIGNInfection control assessment, environmental evaluation, and case-control study.SETTINGNewly built community-based hospital, 28-bed neonatal intensive care unit.PATIENTSNeonatal intensive care unit patients receiving care between June 1, 2013, and September 30, 2014.METHODSCase finding was performed through microbiology record review. Infection control observations, interviews, and environmental assessment were performed. A matched case-control study was conducted to identify risk factors for P. aeruginosa infection. Patient and environmental isolates were collected for pulsed-field gel electrophoresis to determine strain relatedness.RESULTSIn total, 31 cases were identified. Case clusters were temporally associated with absence of point-of-use filters on faucets in patient rooms. After adjusting for gestational age, case patients were more likely to have been in a room without a point-of-use filter (odds ratio [OR], 37.55; 95% confidence interval [CI], 7.16–∞). Case patients had higher odds of exposure to peripherally inserted central catheters (OR, 7.20; 95% CI, 1.75–37.30) and invasive ventilation (OR, 5.79; 95% CI, 1.39–30.62). Of 42 environmental samples, 28 (67%) grew P. aeruginosa. Isolates from the 2 most recent case patients were indistinguishable by pulsed-field gel electrophoresis from water-related samples obtained from these case-patient rooms.CONCLUSIONSThis outbreak was attributed to contaminated water. Interruption of the outbreak with point-of-use filters provided a short-term solution; however, eradication of P. aeruginosa in water and fixtures was necessary to protect patients. This outbreak highlights the importance of understanding the risks of stagnant water in healthcare facilities.Infect Control Hosp Epidemiol 2017;38:801–808

scholarly journals The Association Between Maternal Hypoglycemia on the 75 g Glucose Tolerance Test and Maternal-Neonatal Outcomes: A Matched Case Control Study

2021 ◽  
Author(s):  
Emine Öztürk ◽  
Şükrü Yıldız
Keyword(s):  
Intensive Care Unit ◽  
Intensive Care ◽  
Neonatal Intensive Care Unit ◽  
Pregnant Women ◽  
Neonatal Intensive Care ◽  
Case Control Study ◽  
Case Control ◽  
Neonatal Outcomes ◽  
Increased Risk ◽  
Control Study

Objective: The aim of this study was to determine whether pregnant women who developed maternal hypoglycemia during the 75 g Oral Glucose Test (OGT) were at an increased risk for adverse obstetric and neonatal outcomes. Methods: This case-control study was conducted from computer-based medical records of women who delivered in a tertiary center between January 2015 and December 2018. OGT had been performed with 75 gr glucose for gestational diabetes screening at 24-28 weeks of gestation. The pregnants with 1st-hour blood glucose levels less than 90 mg/dl (low GT) were matched with normoglycemic patients according to age, body mass index (BMI), gravida and gestational weeks. Obstetric and neonatal outcomes were assessed. Results: Of the 1249 pregnant women included in the study, 62 (4.9%) were in the Low GT group. Admission to the neonatal intensive care unit (NICU) showed a rate of 3.48 increase in the Low GT group (95% confidence interval: 1.05-11.47, p=0.04). There was no difference between the two groups in the other obstetric and neonatal parameters such as: preeclampsia, preterm delivery, birth weight, and weight gained during pregnancy and the 5-minute Apgar scores adjusted for gestational age (SGA) of the fetus. Conclusion: Low 75 g OGT results are significantly associated with increased risk of neonatal intensive care unit (NICU) admissions.

scholarly journals Outbreak of Bacillus cereus Infections in a Neonatal Intensive Care Unit Traced to Balloons Used in Manual Ventilation

2000 ◽  
Vol 38 (11) ◽  
pp. 4131-4136 ◽  
Author(s):  
Wil C. Van Der Zwet ◽  
Gerard A. Parlevliet ◽  
Paul H. Savelkoul ◽  
Jeroen Stoof ◽  
Annie M. Kaiser ◽  
...  
Keyword(s):  
Intensive Care Unit ◽  
Intensive Care ◽  
Neonatal Intensive Care Unit ◽  
Bacillus Cereus ◽  
Neonatal Intensive Care ◽  
Case Control Study ◽  
Case Control ◽  
Manual Ventilation ◽  
Prospective Surveillance ◽  
Control Study

In 1998, an outbreak of systemic infections caused byBacillus cereus occurred in the Neonatal Intensive Care Unit of the University Hospital Vrije Universiteit, Amsterdam, The Netherlands. Three neonates developed sepsis with positive blood cultures. One neonate died, and the other two neonates recovered. An environmental survey, a prospective surveillance study of neonates, and a case control study were performed, in combination with molecular typing, in order to identify potential sources and transmission routes of infection. Genotypic fingerprinting by amplified-fragment length polymorphism (AFLP) showed that the three infections were caused by a single clonal type of B. cereus. The same strain was found in trachea aspirate specimens of 35 other neonates. The case control study showed mechanical ventilation with a Sensormedics ventilation machine to be a risk factor for colonization and/or infection (odds ratio, 9.8; 95% confidence interval, 1.1 to 88.2). Prospective surveillance showed that colonization with B. cereusoccurred exclusively in the respiratory tract of mechanically ventilated neonates. The epidemic strain of B. cereus was found on the hands of nursing staff and in balloons used for manual ventilation. Sterilization of these balloons ended the outbreak. We conclude that B. cereus can cause outbreaks of severe opportunistic infection in neonates. Typing by AFLP proved very useful in the identification of the outbreak and in the analysis of strains recovered from the environment to trace the cause of the epidemic.

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