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Kellogg J. Schwab, PhD

  • Abel Wolman Professorship in Water and Public Health
  • Professor

Departmental Affiliations

Center & Institute Affiliations

Contact Information

615 N. Wolfe Street
Room E6620
Baltimore, Maryland 21205

(410) 955-9334

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PhD, University of North Carolina, Chapel Hill, 1995
MSPH, University of North Carolina, Chapel Hill, 1991


Dr. Kellogg Schwab is the Abel Wolman Professor in Water and Public Health in the Department of Environmental Health and Engineering at the Johns Hopkins University Bloomberg School of Public Health and Director of the JHU Water Institute. The Water Institute integrates Hopkins researchers from public health, engineering, chemistry, materials science, medicine, behavior, policy, and economic disciplines to address the critical nexus of water, food, and energy. The goal of this program is to achieve sustainable, scalable solutions for domestic, agricultural, and industrial water challenges. Dr. Schwab's research laboratory focuses on environmental microbiology and engineering with an emphasis on the fate and transport of chemicals, emerging contaminants and pathogenic microorganisms in water, food, and the environment. Current research projects involve investigating innovative water reuse treatment options as well as improving environmental detection methods for noroviruses (the leading cause of non-bacterial gastroenteritis worldwide). He is also working with Hopkins colleagues to integrate mobile data collection to assess family planning along with water, sanitation and hygiene around the world.

Honors and Awards

Graduate Student Travel Award, 1993 Hoechst Celanese Excellence in Graduate Research Award, 1993 American Society of Microbiology Travel Award, 1995 Division of Molecular Virology Training Award, 1997-1999 Division of Molecular Virology Award for Excellence in Postdoctoral Research, 1999 Johns Hopkins Award for Excellence in Advising, Mentoring and Teaching, 2005 Delta Omega Public Health Honor Society Alpha Chapter 2009,  American Society for Microbiology Distinguished Lecturer 2012-14, Fellow of the American Academy of Microbiology 2015, Abel Wolman Professorship in Water and Public Health 2017, UNC Gillings School of Global Public Health Department of Environmental Sciences and Engineering Distinguished Alumnus Award 2018

  • Environmental Health Sciences
  • environmental microbiology
  • microbial fate and transport
  • water quality, drinking water treatment, disinfection, groundwater, wastewater, sewage, water and wastewater distribution systems, gastroenteritis, diarrhea, enteric pathogens, parasites (cryptosporidium, toxoplasma, giardia), viruses (norovirus, norwalk-like viruses, hepatitis A virus, rotavirus), bacterial indicators of water quality, bacteriophage, antibiotic resistant bacteria, molecular detection of microorganisms (PCR, RT-PCR, microarrays, hybridization), infectious diseases, microbial risk assessment, food borne and waterborne outbreak investigations, urban environmental pollution, airborne microorganisms, concentrated animal feeding operations (CAFO), Chesapeake Bay research

Select recent publications from five areas of research

  • WATER and WASTEWATER TREATMENT - Powers M, Yracheta J, Harvey D, O'Leary M, Best LG, Black Bear A, MacDonald L, Susan J, Hasan K, Thomas E, Morgan C, Olmedo P, Chen R0, Rule A, Schwab KJ, Navas-Acien A, George CM. Arsenic in Groundwater in Private Wells in Rural North Dakota and South Dakota: Water Quality Assessment for an Intervention Trial. Environmental Research. V168 pp41-47. 2019. PMID: 30261340 PMCID: PMC6296218 DOI:10.1016/j.envres.2018.09.016 **** Dunkin N, Weng SC, Coulter CC, Jacangelo JG, Schwab KJ. Impacts of virus processing on human norovirus GI and GII persistence during disinfection of municipal secondary wastewater effluent. Water Research. V134 pp 1-12. 2018. **** Exum NG, Betanzo E, Schwab KJ, Chen TYJ, Guikema S, Harvey DE. Extreme precipitation, public health emergencies and safe drinking water in the United States. Current Environmental Health Reports. Vol5(2). pp305-315. 2018. DOI 10.1007/s40572-018-0200-5. ISSN 2196-5412. 2018. **** Dunkin N, Weng SC, Schwab KJ, McQuarrie J, Bell K, Jacangelo JG. Comparative Inactivation of Murine Norovirus and MS2 Bacteriophage by Peracetic Acid and Monochloramine in Municipal Secondary Wastewater Effluent. Env. Sci. and Technology. V51(5). pp.2972-2981. 2017. **** Dunkin N, Weng SC, Jacangelo JG, Schwab KJ. Minimizing Bias in Virally Seeded Water Treatment Studies: Evaluation of Optimal Bacteriophage and Mammalian Virus Preparation Methodologies. Food and Environmental Virology. V9 pp 473-486. DOI: 10.1007/s12560-017-9307-3. 2017. **** Huang H, Fairbrother H, Teychene B, Ajmani G, Abbott Chalew TE, Cho, HH, Schwab KJ, Janangelo J.  Carbon nanotube composite membranes for small “designer” waer treatment systems.  Water Science and Technology: Water Supply. V145. pp917-923. 2014. ****
  • WATER REUSE - Oppenheimer J, Schwab KJ, Jacangelo J. Assessing nutrient loading from reclaimed water irrigation utilizing the chemical marker iohexol. AWWA Water Science. DOI: 10.1002/aws2.1198. Aug 10, 2020. ****Cherchi C, Kesaano M, Badruzzaman M, Schwab KJ, Jacangelo JG. Municipal reclaimed water for multi-purpose applications in the power sector: A review. J of Environmental Management. V236 pp 561-570. 2019. **** Weng SC, Luo Y, Li J, Zhou B, Jacangelo JG, Schwab KJ. Assessment and Speciation of Chlorine Demand in Fresh-Cut Produce Wash Water. Food Control. V60. P543-551 2016. **** Dunkin N, Weng SC, Jacangelo JG, Schwab KJ. Inactivation of Human Norovirus Genogroups I and II and Surrogates by Free Chlorine in Postharvest Leafy Green Wash Water. Appl. Env. Microbiol. V83n22. e 01457-17. 2017. ****
  • NOROVIRUS RESEARCH - Dunkin N, Coulter CC, Weng SC, Jacangelo JG, Schwab KJ. Effects of pH Variability on Peracetic Acid Reduction of Human Norovirus GI, GII RNA and Infectivity Plus RNA Reduction of Selected Surrogates. Food and Environmental Virology. V11 (1) pp76-89. 2019. PMID: 30430442 **** Pisanic N, Ballard SB, Colquechagua FD, François R, Exum N, Yori PP, Schwab KJ, Granger DA, Detrick B, Olortegui MP, Mayta H, Sánchez GJ, Gilman RH, Heaney C, Vinjé J, and Kosek MN. Minimally invasive saliva testing to monitor norovirus infection in community settings. J of Infectious Diseases. 2018. PMID:30517651. DOI:10.1093/infdis/jiy638. 2018. **** Dunkin N, Weng SC, Schwab KJ, McQuarrie J, Bell K, Jacangelo JG. Comparative Inactivation of Murine Norovirus and MS2 Bacteriophage by Peracetic Acid and Monochloramine in Municipal Secondary Wastewater Effluent. Env. Sci. and Technology. V51(5). pp.2972-2981. 2017.. **** Julian TR, Baugher JD, Rippinger C, Pinekenstein R, Kolawole AO, Mehoke T, Wobus CE, Feldman A, Pineda FJ, Schwab KJ. Murine norovirus (MNV-1) exposure in vitro to the purine nucleoside analog Ribavirin increases quasispecies diversity. Virus Research. V211 pp 165-173. 2016. **** Hartmann E, Colquhoun D, Schwab KJ, Halden R. Absolute Quantification of Norovirus Capsid Protein in Food, Water, and Soil Using Synthetic Peptides with Electrospray and MALDI Mass Spectrometry. J of Hazardous Materials. V286. pp 525–532. 2015. ****
  • INTERNATIONAL RESEARCH - Hennegan J, Nansubuga A, Smith C, Redshaw M, Akullo A, Schwab KJ. Measuring menstrual hygiene experience: Development and validation of the Menstrual Practice Needs Scale (MPNS-36) in Soroti, Uganda. British Medical Journal Open.V10. e034461. doi:10.1136/bmjopen-2019-034461. 2020. **** Exum NG, Gorin EM, Sadhu G, Khanna A, Schwab KJ. Evaluating declarations of open defecation free status under the Swachh Bharat (“Clean India”) Mission: repeated cross-sectional surveys in Rajasthan, India. British Medical Journal-Global Health. V5:e002277. doi:10.1136/bmjgh-2019-002277. 2020. **** Hennegan J, Brooks D, Schwab KJ, Melendez-Torres GJ. Measurement in the study of menstrual health and hygiene: A systematic review and audit. PLoS ONE 15(6) e0232935. 2020 **** Exum NG, Kibira SPS, Ssenyonga R, Nobili J, Shannon AK, Ssempebwa JC, Tukahebwa EM, Radloff S, Schwab KJ, Makumbi FE. The prevalence of schistosomiasis in Uganda: A nationally representative population estimate to inform control programs and water and sanitation interventions. Published: August 14, 2019 0007617. PLoS NTD. 2019. **** Overbey K, Schwab KJ, Exum N. Comparison of One-Week and Two-Week Recall Periods for Caregiver-Reported Diarrheal Illness in Children Using Nationally Representative Household Surveys. p1-12. International Journal of Epidemiology. 2019. **** Elliott M, Foster T, MacDonald MC, Schwab KJ, Hadwen WL. Addressing how multiple household water sources and uses build water security and support sustainable development. 2(6). p1-6. DOI: 10.1038/s41545-019-0031-4. Nature partner journals Clean Water. 2019. **** Hennegan J, Shannon A, Rubli J, Schwab KJ, Melendez-Torres GJ. Women’s and girls’ experiences of menstruation in low and middle income countries: a systematic review and qualitative metasynthesis. 16(5) p1-40. DOI:10.1371/journal.pmed.1002803 PLoS Medicine. 2019. **** Hennegan J, Zimmerman L, Shannon A, Exum N, OlaOlorun F, Omoluabi E, Schwab KJ. The relationship between household sanitation and women’s experience of menstrual hygiene: findings from a cross-sectional survey in Kaduna State, Nigeria. International J of Environ Res and Public Health. 15, 905. 2018. DOI:10.3390/ijerph15050905. PMID:29751539. 2018. **** Hennegan J, Shannon A, Schwab KJ. Wealthy, urban, educated. Who is represented in population surveys of women's menstrual hygiene management? Reproductive Health Matters. 26(52). pp36-46. 2018. Exum NG, Lee GO, Olortegui MP, Yori PP, Salas MS, Trigoso DR, Colston J, Schwab KJ, McCormick BJJ, Kosek M. A longitudinal study of household water, sanitation and hygiene characteristics and environmental enteropathy markers in children under 24 months in Iquitos, Peru. American J. Tropical Medicine and Hygiene. Published online: 12 Feb 2018. DOI: **** Vedachalam S, MacDonald LH, Shiferaw S, Seme A, Schwab KJ. Underreporting of high-risk water and sanitation. PLoS One.; May10, 2017. **** Exum NG, Kosek M, Davis MF, Schwab KJ. Surface Sampling Collection and Culture Methods for Escherichia coli in Household Environments with High Fecal Contamination Int. J. Environ. Res. Public Health, 14(8), 947; doi:10.3390/ijerph14080947. 2017. **** Vedachalam S, Shannon A, and Schwab KJ. Mobile-assisted data collection for effective policymaking. IEEE Internet Policy Letters. January. 2017. **** Vedachalam S, MacDonald LH, Omoluabi E, OlaOlorun F, Otupiri E, Schwab KJ. The role of packaged water in meeting global targets on improved water access. Journal of Water, Sanitation and Hygiene for Development. V7(3). pp 369-377. 2017. **** Exum NG, Olortegui MP, Yori PP, Davis MF, Heaney CD, Kosek M, Schwab KJ. Floors and toilets: Association of floors and sanitation practices with fecal contamination in Peruvian Amazon peri-urban households. Env. Sci and Technology. V50 pp 7373-7381. 2016. **** Fuhrmeister E,  Schwab KJ, Julian T. Estimates of Nitrogen, Phosphorus, Biochemical Oxygen Demand, and Fecal Coliform Entering the Environment Due to Inadequate Sanitation Treatment Technologies in 108 Low and Middle Income Countries.  Envir Sci Technology. V49(19). pp 11604-1161. 2015. **** Julian T, Islam MA, Pickering A, Roy S, Fuhrmeister E, Ercumen A, Harris A, Bishai J, Schwab KJ.  Genotypic and phenotypic characterization of Escherichia coli isolated from feces, hands, and soils in rural Bangladesh using the Colilert Quanti-Tray System (IDEXX). Appl. Env. Micro. V81 pp 1735-1743.  2015. ****
  • ENVIRONMENTAL EXPOSURE INCLUDING ANTIBIOTIC RESISTANCE - Harmon JB, Gray HK, Young CC, Schwab KJ. Microfluidic droplet application for bacterial surveillance in fresh-cut produce wash waters. PLoS One. 2020 Jun 9;15(6):e0233239. doi: 10.1371/journal.pone.0233239. eCollection 2020. PMID: 32516315. 2020. **** Davis B, Jacobs J, Davis M, Schwab KJ, DePaola A, and Curriero F. Environmental determinants of Vibrio parahaemolyticus in the Chesapeake Bay. Appl. and Environ. Micro. V83no21. e 01147-17. 2017. **** Exum NG, Olortegui MP, Yori PP, Davis MF, Heaney CD, Kosek M, Schwab KJ. Floors and toilets: Association of floors and sanitation practices with fecal contamination in Peruvian Amazon peri-urban households. Env. Sci and Technology. V50 pp 7373-7381. 2016. **** Exum NG, Pisanica N, Granger DA, Schwab KJ, Detrick B, Kosek M, Egorov AI, Griffin SM, Heaney CD. Use and application of immunological biomarkers to estimate waterborne infections. Curr Envir Health Rpt. V 3. P 322-334. 2016. **** Soller J, Eftim S, Wade TJ, Ichida A, Clancy J, Johnson T, Schwab KJ, Ramirez-Toro G, Nappier S, Ravenscroft J. Use of quantitative microbial risk assessment to improve interpretation of a recreational water epidemiological study.Microbial Risk Analysis. V1.pp 2-11. 2016. **** Haack SK, Duris JW, Kolpin DW, Fogarty LR, Johnson HE, Gibson KE, Focazio M, Schwab KJ,  Hubbard LE, Foreman WT  Genes indicating zoonotic and swine pathogens are persistent in stream water and sediment following a swine manure spill.  Applied Environmental Microbiology, V81. pp 3430-3441. 2015. **** Heaney CD, Exum NG, Dufour AP, Brenner KP, Haugland RA, Chern E, Schwab KJ, Love DC, Serre ML, Noble R, Wade TJ. Water quality, weather and environmental factors associated with fecal indicator organism density in beach sand at two recreational marine beaches.  Science of the Total Environment. V497-498. pp440-447. 2014. **** Sapkota AR, Kinney EL, George A, Hulet RM, Cruz-Cano R, McDermott P, Schwab KJ, Zhang G, Joseph SW.  Lower Prevalence of Antibiotic-resistant Salmonella on Large-Scale U.S. Conventional Poultry Farms that Transitioned to Organic Practices.  Science of the Total Environment. V476-477. pp387-392.  2014. ****