Catherine Karr

Adjunct Professor, Epidemiology
Professor, Pediatrics - General Pediatrics
Professor, Env. and Occ. Health Sciences



PhD Epidemiology, University of Washington, 2004
MD Medicine, University of Washington, 1999
MS Toxicology, University of Washington, 1989



Department of Environmental and Occupational Health Sciences
Box 354695
4225 Roosevelt Way NE, Suite 100
Seattle, WA 98105


Catherine Karr is a pediatric environmental medicine specialist and environmental epidemiologist. She has a primary appointment in the Department of Pediatrics, Joint in Environmental & Occupational Health Sciences, and Adjunct in Epidemiology. Her research areas include environmental contaminants and pediatric respiratory health including asthma, health of farmworker children, and global children's environmental health. Much of her research utilizes community engaged research approaches. She shares leadership of a large pregnancy cohort as part of the NIH Environmental Influences on Child Health Outcomes (ECHO) program. She is affiliated with the Pacific Northwest Center for Agricultural Safety and Health and Interdisciplinary Center for Exposures, Disease, Genetics and the Environment (EDGE). She has a general pediatric practice at the UW Pediatric Clinic at Roosevelt and also provides specialty pediatric environmental medicine consultation at this site and the Harborview Medical Center. As Director of the NW Pediatric Environmental Health Specialty Unit (PEHSU), she sets the direction for outreach and education as well as responding to queries from health care providers, government officials and families regarding health risks associated with environmental exposures.

Research Interests

  • Pediatric environmental health
  • Air pollution
  • Asthma
  • Pesticides
  • Global children's environmental health
  • Farmworker health
  • Community engaged research

Recent Publications (PubMed)

Associations of Pre- and Postnatal Air Pollution Exposures with Child Behavioral Problems and Cognitive Performance: A U.S. Multi-Cohort Study.
(2022 Jun)
Environ Health Perspect 130(6): 67008
Ni Y, Loftus CT, Szpiro AA, Young MT, Hazlehurst MF, Murphy LE, Tylavsky FA, Mason WA, LeWinn KZ, Sathyanarayana S, Barrett ES, Bush NR, Karr CJ

Prenatal exposure to particulate matter and placental gene expression.
(2022 Jul)
Environ Int 165(): 107310
Enquobahrie DA, MacDonald J, Hussey M, Bammler TK, Loftus CT, Paquette AG, Byington N, Marsit CJ, Szpiro A, Kaufman JD, LeWinn KZ, Bush NR, Tylavsky F, Karr CJ, Sathyanarayana S

Association of prenatal exposure to ambient air pollution with adverse birth outcomes and effect modification by socioeconomic factors.
(2022 Sep)
Environ Res 212(Pt E): 113571
Quraishi SM, Hazlehurst MF, Loftus CT, Nguyen RHN, Barrett ES, Kaufman JD, Bush NR, Karr CJ, LeWinn KZ, Sathyanarayana S, Tylavsky FA, Szpiro AA, Enquobahrie DA

Longitudinal measures of phthalate exposure and asthma exacerbation in a rural agricultural cohort of Latino children in Yakima Valley, Washington.
(2022 Jun)
Int J Hyg Environ Health 243(): 113954
Babadi RS, Riederer AM, Sampson PD, Sathyanarayana S, Kavanagh TJ, Krenz JE, Andra SS, Kim-Schulze S, Jansen KL, Torres E, Perez A, Younglove LR, Tchong-French MI, Karr CJ

The association between duration of breastfeeding and childhood asthma outcomes.
(2022 May 10)
Ann Allergy Asthma Immunol
Wilson K, Gebretsadik T, Adgent MA, Loftus C, Karr C, Moore PE, Sathyanarayana S, Byington N, Barrett E, Bush N, Nguyen R, Hartman TJ, LeWinn KZ, Calvert A, Mason WA, Carroll KN

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