Los Alamos National Laboratory

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Sara Y. Del Valle

Sara Del Valle

Phone (505) 665-9286


  • Biosciences
  • Biosecurity
  • Modeling of viral disease dynamics
  • Epidemiology modeling
  • Computational Physics and Applied Mathematics
  • Mathematics
  • Monte Carlo methods
  • Discrete event simulation
  • Applied Math
  • Agent-based applications
  • EpiSims
  • Uncertainty analysis
  • Network modeling
  • Epidemiology modeling
  • Computer and Computational Sciences
  • Machine learning,
  • Data mining
  • High performance computing
  • Information Science and Technology
  • National infrastructure


Developing, integrating, and analyzing mathematical and computational models for the spread of infectious diseases including smallpox, anthrax, malaria, HIV, and influenza on a pandemic scale.

Studying the role of social behavior on disease dynamics, including the impact of social media on behavior and developing computational models to study those impacts.


Ph.D., Applied Mathematics and Computational Sciences, University of Iowa, 2005 Advisors: Dr. Herbert W. Hethcote and Dr. James M. Hyman. Thesis: Effects of Behavioral Changes and Mixing Patterns in Mathematical Models for Smallpox Epidemics

M. S., Applied Mathematics, New Jersey Institute of Technology, 2001

B. S., Applied Mathematics, New Jersey Institute of Technology, 2000  


LANL Positions

Scientist/Project Leader, Defense Systems and Analysis Division 2006 – present

Postdoctoral Research Assistant, Computer & Computational Sciences Division, 2005 – 2006

Graduate Guest Researcher, Theoretical Division, 2004 – 2005

Graduate Research Assistant, Center for Nonlinear Studies, 2003 – 2004



Los Alamos Award Program, The Associate Directorate for Threat Identification and Response (ADTIR), 2012

LANL 2011 Spot Award, D-4 Group, 2011

Los Alamos Distinguished Performance Award, Large Group, 2009

Nominated for Distinguished Performance Award, Individual, 2009

Nominated for Special Act Award, Department of Homeland Security, 2009

Los Alamos Awards Program, D Division, 2007 – 2010, 2012

Outstanding Alumni Award from the College of Science and Liberal Arts, NJIT, 2007

Best Paper Award, North American Association for Computational Social and Organization Sciences Conference, 2007

Dissertation Fellowship, Alfred P. Sloan Foundation, 2004 – 2005

Graduate Fellowship, The Graduate Assistant in Areas of National Need, 2001 – 2002

Best Poster Award, Society for the Advancement of Chicanos and Native Americans in Science Conference, 2001

Scholarship, Distinguished Edward J. Bloustein Scholarship, 1996 – 2000

Excellence in Mathematics Award, NJIT, 1996  



Agusto FB, Del Valle SY, Blayneh KW, Ngonghala CN, Goncalves MJ, Li N, Zhao R, Gong H. The Impact of Bed-net Use on Malaria Prevalence. Journal of Theoretical Biology, 2013; 320: 58-65.

Glasser J, Feng Z, Moylan A, Germundsson R, Del Valle S, Castillo-Chavez C. Mixing in age-structured population models of infectious diseases. Journal of Mathematical Biosciences, 2012; 235:1-7.

Tracht SM, Del Valle SY, Edwards BK. Economic Analysis of the Use of Facemasks During Pandemic (H1N1) 2009. Journal of Theoretical Biology, 2012; 300:161-172.

Del Valle S, Tellier R, Settles GS, Tag JW. Can we reduce the spread of influenza in school with face masks? American Journal of Infection Control, 2012; 38:676-7.

Tracht S, Del Valle S, Hyman JM. Mathematical modeling of the effectiveness of facemasks in reducing the spread of novel influenza A (H1N1). PLoS ONE, 2010; 5(2):e9018.

S. Mniszewski, Del Valle S, Stroud P, Riese J, Sydoriak S. Pandemic simulation of antivirals + school closures: buying time until strain-specific vaccine is available. Computational & Mathematical Organization Theory, 2008; 14:209-221.

Del Valle S, Hyman JM, Hethcote HW, Eubank SG. Mixing Patterns Between Age Groups Using Social Networks. Social Networks, 2007; 29:539-554.

Stroud P, Del Valle S, Sydoriak S, Riese J, Mniszewski S. Spatial Dynamics of Pandemic Influenza in a Massive Artificial Society. Journal of Artificial Societies and Social Simulation, 2007; 10(9).

Del Valle S, Hethcote H, Hyman JM, Castillo-Chavez C. Effects of Behavioral Changes in a Smallpox Attack Model. Journal of Mathematical Biosciences, 2005; 195:228-251.

Del Valle S, Morales-Evangelista A, Velasco MC, Kribs-Zaleta C. Effects of Education, Vaccination and Treatment on HIV Transmission in Homosexuals with Genetic Heterogeneity. Journal of Mathematical Biosciences, 2004; 187:11-33.