This K23 proposal combines focused coursework and training, a thoughtful research plan and an expert mentoring team and is designed to foster the development of Kerri Thom, MD, MS into a successful, independent investigator in the study of emerging infections and antibiotic resistance. Dr. Thom proposes to study the hospital epidemiology of Acinetobacter baumannii. This organism has emerged as an important cause of nosocomial infections due to a rising incidence, associated morbidity and mortality and the rapid development of multidrug resistance.
In Aim 1, Dr. Thom will identify Acinetobacter colonization among a large, existing cohort and will use molecular typing to quantify the amount of patient-to-patient transmission in the endemic setting.
Aim 3 will also utilize this cohort to examine the association between environmental contamination and subsequent nosocomial transmission.
In Aim 2, Dr. Thom will prospectively identify a cohort of patients infected with Acinetobacter to determine the rate of contamination of the surrounding environment and to identify heavily contaminated sites. This research will lead to an improved understanding of the hospital epidemiology of Acinetobacter, including the modes of transmission and the role of the environment in nosocomial spread, which will be essential in the development of cost-effective interventions aimed at decreasing transmission. This K23 award will provide Dr. Thom with the opportunities for specific training in molecular epidemiology, antimicrobial resistance mechanisms and research informatics which will be essential to the success of this proposal and to her future success in patient-oriented research in emerging pathogens and antimicrobial resistance. To help achieve these goals, she has assembled a mentoring team with a wealth of experience: Drs. Harris (emerging pathogens/antibiotic resistance, research informatics), Stine (molecular epidemiology, bioinformatics), Roghmann (emerging pathogens/antibiotic resistance, molecular epidemiology), Magder (biostatistics), Bonomo (antibiotic resistance mechanisms), and Srinivasan (Outbreak investigation of Acinetobacter). The support of this K23 award will provide the experience and training needed to compete for R01 NIH grant funding and will serve as a foundation for a career as an independent investigator and a leader of emerging pathogens and antibiotic resistance.

Public Health Relevance

Acinetobacter is an important cause of nosocomial infections and is associated with significant morbidity and mortality. Yet our knowledge about this organism is far less developed then that for other nosocomial pathogens, such as MRSA. Much of what we do know comes from outbreak investigations and knowledge of the modes of transmission and the role of environmental contamination in the endemic setting is lacking.

National Institute of Health (NIH)
National Institute of Allergy and Infectious Diseases (NIAID)
Mentored Patient-Oriented Research Career Development Award (K23)
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Microbiology and Infectious Diseases B Subcommittee (MID)
Program Officer
Korpela, Jukka K
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University of Maryland Baltimore
Public Health & Prev Medicine
Schools of Medicine
United States
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Thom, Kerri A; Rock, Clare; Jackson, Sarah S et al. (2017) Factors Leading to Transmission Risk of Acinetobacter baumannii. Crit Care Med 45:e633-e639
Barnes, Sean L; Rock, Clare; Harris, Anthony D et al. (2017) The Impact of Reducing Antibiotics on the Transmission of Multidrug-Resistant Organisms. Infect Control Hosp Epidemiol 38:663-669
Johnson, J Kristie; Robinson, Gwen L; Pineles, Lisa L et al. (2017) Carbapenem MICs in Escherichia coli and Klebsiella Species Producing Extended-Spectrum ?-Lactamases in Critical Care Patients from 2001 to 2009. Antimicrob Agents Chemother 61:
Shams, Alicia M; Rose, Laura J; Edwards, Jonathan R et al. (2016) Assessment of the Overall and Multidrug-Resistant Organism Bioburden on Environmental Surfaces in Healthcare Facilities. Infect Control Hosp Epidemiol 37:1426-1432
Rock, Clare; Thom, Kerri A; Harris, Anthony D et al. (2016) A Multicenter Longitudinal Study of Hospital-Onset Bacteremia: Time for a New Quality Outcome Measure? Infect Control Hosp Epidemiol 37:143-8
Harris, Anthony D; Jackson, Sarah S; Robinson, Gwen et al. (2016) Pseudomonas aeruginosa Colonization in the Intensive Care Unit: Prevalence, Risk Factors, and Clinical Outcomes. Infect Control Hosp Epidemiol 37:544-8
Johnson, J Kristie; Robinson, Gwen L; Zhao, LiCheng et al. (2016) Comparison of molecular typing methods for the analyses of Acinetobacter baumannii from ICU patients. Diagn Microbiol Infect Dis 86:345-350
Rock, Clare; Harris, Anthony D; Johnson, J Kristie et al. (2015) Infrequent air contamination with Acinetobacter baumannii of air surrounding known colonized or infected patients. Infect Control Hosp Epidemiol 36:830-2
Harris, Anthony D; Fleming, Brandon; Bromberg, Jonathan S et al. (2015) Surgical site infection after renal transplantation. Infect Control Hosp Epidemiol 36:417-23
Pepin, Christopher S; Thom, Kerri A; Sorkin, John D et al. (2015) Risk factors for central-line-associated bloodstream infections: a focus on comorbid conditions. Infect Control Hosp Epidemiol 36:479-81

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