Melvin E. Carnahan Professor of Pediatrics; Unit Leader Pathobiology; Director Division of Pediatric Gastroenterology and Nutrition

• Gastroenterology and Nutrition
• Pathobiology
• Phillip I. Tarr Research Lab

Education

• A.B., Brown University, 1975
• M.D., Yale University, 1980

Training

• Pediatric Residency, University of Washington, Seattle, Wa., 1980-83
• Assistant Chief Resident, Department of Pediatrics, University of Washington School of Medicine/Children's Orthopedic Hospital and Medical Center, Seattle, Wa., 1982-83
• Infectious Diseases Fellowship, University of Washington, Seattle, Wa., 1983-87
• Senior Fellow, Division of Infectious Diseases, Department of Medicine, University of Washington School of Medicine, Seattle, Wa., 1983-86
• Research Associate, Seattle Biomedical Research Institute, Seattle, Wa., 1986-87
• Gastroenterology Fellowship, University of Washington, Seattle, Wa., 1988-89

Licensure and Board Certification

• Washington License, 1981
• Missouri License, 2003
• American Board of Pediatrics, 1984
• Pediatric Gastroenterology, 1993
• Pediatric Gastroenterology (Re-certification), 1999

Selected Publications

1. Shaikh N, Holt NJ, Johnson JR, Tarr PI.  Fim operon variation in the emergence of Enterohemorrhagic Escherichia coli: an evolutionary and functional analysis.  FEMS Microbiol Lett. 2007 Aug;273(1):58-63.

2. Bielaszewska M, Prager R, Kock R, Mellmann A, Zhang W, Tschape H, Tarr PI, Karch H.  Shiga toxin gene loss and transfer in vitro and in vivo during enterohemorrhagic Escherichia coli O26 infection in humans.  Appl Environ Microbiol. 2007 May;73(10):3144-50.

3. Ricci KA, Girosi F, Tarr PI, Lim YW, Mason C, Miller M, Hughes J, von Seidlein L, Agosti JM, Guerrant RL.  Reducing stunting among children: the potential contribution of diagnostics. Nature. 2006 Nov 23;444 Suppl 1:29-38.

4. Qin X, Razia Y, Johnson JR, Stapp JR, Boster DR, Tsosie T, Smith DL, Braden CR, Gay K, Angulo FJ, Tarr PI.  Ciprofloxacin-resistant gram-negative bacilli in the fecal microflora of children.  Antimicrob Agents Chemother. 2006 Oct;50(10):3325-9. 

5. Klein EJ, Boster DR, Stapp JR, Wells JG, Qin X, Clausen CR, Swerdlow DL, Braden CR, Tarr PI.  Diarrhea etiology in a Children's Hospital Emergency Department: a prospective cohort study.  Clin Infect Dis. 2006 Oct 1;43(7):807-13.

6. Johnson JR, Jelacic S, Schoening LM, Clabots C, Shaikh N, Mobley HL, Tarr PI. The IrgA homologue adhesin Iha is an Escherichia coli virulence factor in murine urinary tract infection.  Infect Immun. 2005 Feb;73(2):965-71.