Joshua Schiffer, MD, MS

Josh is an Associate Member in the Vaccine and Infectious Disease Division at Fred Hutchinson Cancer Research Center and Assistant Professor at the University of Washington in the Division of Allergy and Infectious Diseases, Department of Medicine. 

Josh loves identifying problems in the clinic and the infectious diseases literature that can be addressed with mathematical models. He feels privileged to collaborate with such a driven and gifted group of multi-disciplinary scientists and clinicians at Fred Hutchinson and the University of Washington. 

A proud native of Baltimore, Josh is now fully acclimated to the Pacific Northwest. In his spare time, he enjoys eating, reading, hiking, skiing, downwind paddle boarding and spending time with his two sons and wife.



Pavitra Roychoudhury, PhD

Pavitra is a Postdoctoral Research Associate with the Schiffer Group. She recently completed her PhD in Bioinformatics and Computational Biology at the University of Idaho where she studied the effects of spatial structure on phenotypic  evolution in bacteriophages.

Pavitra enjoys working on problems that lie at the interface of biology, mathematics and engineering and is excited to be a part of the dynamic and interdisciplinary environment at the Hutch.

She was born in Bangalore, India but spent most of her childhood in Nigeria and Ghana and spent 9 years in Singapore before coming to the States. She enjoys traveling, photography, swimming, music, dance and the wonderful outdoors of the Pacific Northwest.


Dan RoundSmall

Daniel Reeves, PhD

Dan is a Post-Doctoral Research Fellow with the Schiffer group working on models of HIV. He received a PhD in physics from Dartmouth College, but was always inspired by biological problems. The complex dynamics at work in viral infection drew him to theoretical immunology originally, and he now integrates his background from physical modeling into providing new insights into cellular processes, linking the mathematics of ecology and immunology, and ultimately, helping to cure HIV.

Dan loves thinking about science and mathematics problems, but also can be found reading the Economist, playing music, or surfing, climbing, hiking, and camping all over the PNW.



David Swan, MS, MME

David joined the Schiffer Group in 2010 as an independent software consultant.  He works with several groups at Fred Hutchinson providing simulation expertise and other types of computing support. 

Prior to working at Fred Hutchinson, David was a senior software engineer with F5 Networks and Boeing as well as serving as high school teacher with the Peace Corps in Kenya, East Africa. He has an undergraduate degree in Electrical Engineering from Stanford and graduate degrees in Computer Science and Medical Engineering from UW.

When not at work, he enjoys spending time with his family, playing ultimate frisbee, stone carving and delving into all the outdoor activities the Northwest has to offer.



Elizabeth Duke, MD

Elizabeth joined the group in the summer of 2015 as an Infectious Disease Fellow. She studied math and Latin at Marshall University in West Virginia as an undergraduate, math as a master's student, and medicine at Marshall's School of Medicine. She completed a residency in Internal Medicine at the University of Wisconsin (UW) and came to the Pacific Northwest as an Infectious Disease fellow at the University of Washington (UW). Elizabeth is staying on at the UW and Fred Hutch as a KL2 scholar in the Institute for Translational Health Sciences (ITHS). She is currently working on projects that include intra-host models of CMV and HIV latency. 

Elizabeth enjoys watching the Green Bay Packers and secondly the Seattle Seahawks, exploring the West Coast, soaking in hot tubs, singing in the car, watching movies (good ones, mainly), fancy computers, llamas and alpacas, and music of the 1980's.