• Adjunct Professor, Global Health
  • Professor, Env. and Occ. Health Sciences
  • Adjunct Professor, Pediatric Dentistry
Marilyn Roberts

1959 NE Pacific St
DEOHS School of Public Health
University of Washington
Box 357234
Seattle, WA 98195
United States

Phone Number: 
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Dr. Roberts' research interests include identification of vancomycin resistant enterococci [VRE] and methicillin resistant Staphylococcus aureus [MRSA] in humans, animals and the environment and the relationship among these three in a variety of settings [One Health], the mechanisms of antibiotic resistance and their distribution in various microbiomes and how resistance spreads through bacterial populations and ultimately, how these genes affect therapy. The laboratory has an ongoing project to isolate and characterize MRSA from primates, personnel and the environment from the Washington National Primate Research Center. Dr. Roberts is also working with people from the Indonesian primate center. Future work will look for MRSA in primate populations outside the USA, both in Primate centers and wild populations. The laboratory is also interested in antibiotic resistance in oral and urogenital bacteria in general. Another focus is on the oral pathogen Streptococcus mutants and how treatments affect the organism's cariogenic potential, as well as, levels in health and disease within the USA and in other countries.

  • PhD (University of Washington)
  • MS (University of Washington)
  • BS (University of Washington)
Country Affiliations 
Health Topics 
  • Anti-Microbial Resistance (AMR)
  • Disease Surveillance
  • Environmental Health (incl. Climate Change)
  • Epidemiology
  • Genomics
  • Infectious Diseases (other than STDs)
  • One Health
  • Pathobiology
DGH Centers, Programs and Initiatives and Affiliated Organizations 

Roberts, M.C., G. Garland-Lewis, S. Trufan, J.S. Meschke, H. Fowler, R. Shean, A.L. Greninger and P.M. Rabinowitz. Distribution of Staphylococcus species in workers, cows, and shared diary farm environments. FEMS Microbiol Lett. 365, 2018 fny146 PMID: 29912375

Melendez, D., M.C. Roberts, A.L. Greninger, S. Weissman, D. No, P.M. Rabinowitz, S. Wasser. Whole genome analysis of extraintestinal pathogenic E. coli (ExPEC) multidrug resistant ST73 and ST127 isolated from endangered Southern Resident killer whales (Orcinus orca). PMID: 29668933

Bortolaia V., R. S. Kaas, E. Ruppe, M.C. Roberts, S. Schwarz, V. Cattori, A. Philippon, R. L.A. Rebelo, B. Neumann, G. Werner, J.K. Bender, K. Stingl, M. Nguyen, B.B. Xavier, S. Malhotra, H. Westh, M. Pinholt, M. Anjum, N. Duggett, L. Kempf, S. Nykasenoja, S. Olkkola, K. Wieczorek, L. Clemente, A. Amaro, L. Clemente, J. Mossong, S. Losch, C. Ragimbeau, O. Lund, and F.M. Aarestrup. ResFinder 4.0 for in silico antibiograms. J. Antimicrob. Chemother. 2020. https://academic.oup.com/jac/advance-article/doi/10.1093/jac/dkaa345/5890997?guestAccessKey=998c3048-6ba3-4b8e-b413-14ee263fd9a1

Roberts, M.C., P.R. Joshi, S. Monecke, R. Ehricht, E. Müller, D. Gawlik**, C. Diezel, S.D. Braun, S. Praudel, M. Acharya, L. Khanal, N.P. Koju, M. Chalise, and R.C. Kyes. Staphylococcus aureus and Methicillin Resistant S. aureus in Nepalese Primates; Resistance to Antimicrobials, Virulence and Genetic Lineages. Antibiotics 2020. 9:689 doi:10.3390/antibiotics9100689