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Faculty & Staff

* (Nursing Faculty Profile)

Ryan Pace, PhD AAY-7774-2020

Ryan Pace, PhD

Assistant Professor, College of Nursing


  • PhD, Molecular and Cellular Biology, University of Arizona, 2015


  • Member (International Society for Research in Human Milk and Lactation, 2019 - Present)
  • Member (American Society for Nutrition, 2019 - Present)
  • Member (American Society for Microbiology, 2018 - Present)

Recent Publications

  • Pace RM, King-Nakaoka EA, Morse AG, Pascoe KJ, Winquist A, Caffé B, et al. Prevalence and duration of SARS-CoV-2 fecal shedding in breastfeeding dyads following maternal COVID-19 diagnosis Frontiers in Immunology. 15: 1329092, 2024.
  • Couvillion SP, Mostoller KE, Williams JE, Pace RM, Stohel IL, Peterson HK, et al. Interrogating the role of the milk microbiome in mastitis in the multi-omics era Frontiers in Microbiology. 14: 1105675, 2023.
  • Pace RM, Pace CDW, Fehrenkamp BD, Price WJ, Lewis M, Williams JE, McGuire MA, McGuire MK Sodium and potassium concentrations and somatic cell count of human milk produced in the first six weeks postpartum and their suitability as biomarkers of clinical and subclinical mastitis Nutrients. 14(22) : 4708, 2022.
  • Martin MA, Keith M, Pace RM, Williams JE, Ley SH, Barbosa-Leiker C, et al. SARS-CoV-2 specific antibody trajectories in mothers and infants over two months following maternal infection Frontiers in Immunology. 13: 1015002, 2022.
  • Pace RM, Williams JE, Järvinen KM, Meehan CL, Martin MA, Ley SH, et al. Milk from women diagnosed with COVID- 19 does not contain SARS-CoV-2 RNA but has persistent levels of SARS-CoV-2-specific IgA antibodies Frontiers in Immunology. 12: 5566, 2021.
  • COVID-19 Research Prioritization Group on MNCAH Global research priorities on COVID-19 for maternal, newborn, child and adolescent health Journal of Global Health. 11: 05026, 2021.
  • Pace RM, Chu DM, Prince AL, Ma J, Seferovic MD, Aagaard KM Complex species and strain ecology of the vaginal microbiome from pregnancy to postpartum and association with preterm birth Med. 2(9) : 1027-1049.e7, 2021.
  • Pace RM, Williams JE, Robertson B, Lackey KA, Meehan CL, Price WJ, et al. Variation in human milk composition is related to differences in milk and infant fecal microbial communities Microorganisms. 9(6) : 1153, 2021.
  • Pace RM, Williams JE, Järvinen KM, Belfort MB, Pace CDW, Lackey KA, et al. Characterization of SARS-CoV-2 RNA, antibodies, and neutralizing capacity in milk produced by women with COVID-19 mBio. 12(1) : e03192–20, 2021.