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Dr. Barbara A. Han

Disease Ecologist | PhD, Oregon State University

machine learning, behavioral ecology, macroecology

845 677-7600 x135

Barbara Han’s research is at the intersection of ecology, computing, and global health. Han uses machine learning to forecast outbreaks of new zoonotic diseases – those that ‘jump’ from animals to humans. Of more than a billion cases of human illness reported each year, the majority are attributed to zoonotic pathogens.

Han employs complex computer algorithms to analyze patterns and processes in nature that could result in the next Ebola, SARS, or West Nile virus outbreak. Some of these models compare traits of known animal disease carriers – size, diet, reproductive habits, biogeography – with thousands of species not yet known to carry disease, in order to predict which animals might become disease carriers in the future. Han also works on projects that predict where and when diseases could emerge; other research investigates why and how some species transmit more zoonoses to humans than others.

Research like Han’s has the potential to become a valuable tool for public health officials. Predicting and preempting the arrival of a new zoonotic disease will save lives. This technology could also impact land management decisions, as it becomes obvious that diseases are more likely to emerge from certain habitats.

Han has partnered with diverse collaborators at IBM and NASA to advance research on global disease prediction. She contributes to efforts led by WHO and the US Government to apply this research to disease preemption.

Fischhoff, Ilya R., Adrian Castellanos, João P.G.L.M. Rodrigues, Arvind Varsani, and Barbara A. Han. 2021. “Predicting The Zoonotic Capacity Of Mammal Species For Sars-Cov-2”. Cold Spring Harbor Laboratory. doi:10.1101/2021.02.18.431844.
Becker, Daniel J., and Barbara A. Han. 2021. “The Macroecology And Evolution Of Avian Competence For Borrelia Burgdorferi”. Global Ecology And Biogeography 30 (3). Wiley: 710-724. doi:10.1111/geb.13256.
Fischhoff, Ilya R., Tao Huang, Stephen K. Hamilton, Barbara A. Han, Shannon L. LaDeau, Richard S. Ostfeld, Emma J. Rosi, and Christopher T. Solomon. 2020. “Parasite And Pathogen Effects On Ecosystem Processes: A Quantitative Review”. Ecosphere 11 (5). Wiley. doi:10.1002/ecs2.3057.
Han, Barbara A., Suzanne M. O'Regan, John Paul Schmidt, John M. Drake, and Amanda Bates. 2020. “Integrating Data Mining And Transmission Theory In The Ecology Of Infectious Diseases”. Ecology Letters 23 (8). Wiley: 1178-1188. doi:10.1111/ele.13520.
Downs, Cynthia J., Laura A. Schoenle, Barbara A. Han, Jon F. Harrison, and Lynn B. Martin. 2019. “Scaling Of Host Competence”. Trends In Parasitology 35 (3): 182 - 192. doi:10.1016/
Han, Barbara A., S. Majumdar, F. P. Calmon, B. S. Glicksberg, R. Horesh, A. Kumar, A. Perer, et al. 2019. “Confronting Data Sparsity To Identify Potential Sources Of Zika Virus Spillover Infection Among Primates”. Epidemics 27: 59 - 65. doi:10.1016/j.epidem.2019.01.005.
Plowright, Raina K., Daniel J. Becker, Daniel E. Crowley, Alex D. Washburne, Tao Huang, P. O. Nameer, Emily S. Gurley, and Barbara A. Han. 2019. “Prioritizing Surveillance Of Nipah Virus In India”. Plos Neglected Tropical Diseases 13 (6): e0007393. doi:10.1371/journal.pntd.0007393.
Schmidt, John Paul, Sean Maher, John M. Drake, Tao Huang, Maxwell J. Farrell, and Barbara A. Han. 2019. “Ecological Indicators Of Mammal Exposure To Ebolavirus”. Philosophical Transactions Of The Royal Society B: Biological Sciences 374 (1782). The Royal Society: 20180337. doi:10.1098/rstb.2018.0337.
Han, Barbara A., and Richard S. Ostfeld. 2019. “Topic Modeling Of Major Research Themes In Disease Ecology Of Mammals”. Journal Of Mammalogy 100 (3). Oxford University Press (OUP): 1008-1018. doi:10.1093/jmammal/gyy174.
Stephens, Patrick R., Sonia Altizer, Vanessa O. Ezenwa, John L. Gittleman, Emili Moan, Barbara A. Han, Shan Huang, and Paula Pappalardo. 2019. “Parasite Sharing In Wild Ungulates And Their Predators: Effects Of Phylogeny, Range Overlap, And Trophic Links”. Journal Of Animal Ecology 88 (7). Wiley: 1017-1028. doi:10.1111/1365-2656.12987.
Berger, Kavita, James Wood, Bonnie Jenkins, Jennifer Olsen, Stephen Morse, Louise Gresham, J. Root, et al. 2019. “Policy And Science For Global Health Security: Shaping The Course Of International Health”. Tropical Medicine And Infectious Disease 4 (2): 60. doi:10.3390/tropicalmed4020060.
Pandit, Pranav, and Barbara A. Han. 2019. “Rise Of Machines In Disease Ecology”. The Bulletin Of The Ecological Society Of America 101 (1). Wiley. doi:10.1002/bes2.1625.
Walker, Joseph, Barbara A. Han, Isabel M. Ott, and John M. Drake. 2018. “Transmissibility Of Emerging Viral Zoonoses”. Plos One 13 (11): e0206926. doi:10.1371/journal.pone.0206926.
Strona, G., C. J. Carstens, P. S. A. Beck, and Barbara A. Han. 2018. “The Intrinsic Vulnerability Of Networks To Epidemics”. Ecological Modelling 383: 91 - 97. doi:10.1016/j.ecolmodel.2018.05.013.
Dallas, Tad A., Barbara A. Han, Charles L. Nunn, Andrew W. Park, Patrick R. Stephens, and John M. Drake. 2018. “Host Traits Associated With Species Roles In Parasite Sharing Networks”. Oikos 128 (1): 23 - 32. doi:10.1111/oik.05602.
Almeida, Rafael M., Barbara A. Han, Alexander J. Reisinger, Catherine Kagemann, and Emma J. Rosi. 2018. “High Mortality In Aquatic Predators Of Mosquito Larvae Caused By Exposure To Insect Repellent”. Biology Letters 14 (10): 20180526. doi:10.1098/rsbl.2018.0526.
Dallas, Tad A., A. Aguirre, Sarah A. Budischak, Colin Carlson, V.O. Ezenwa, Barbara A. Han, Shan Huang, and Patrick R. Stephens. 2018. “Gauging Support For Macroecological Patterns In Helminth Parasites”. Global Ecology And Biogeography 27 (12): 1437 - 1447. doi:10.1111/geb.12819.
Blaustein, Andrew, Jenny Urbina, Paul Snyder, Emily Reynolds, Trang Dang, Jason Hoverman, Barbara A. Han, Deanna Olson, Catherine Searle, and Natalie Hambalek. 2018. “Effects Of Emerging Infectious Diseases On Amphibians: A Review Of Experimental Studies”. Diversity 10 (3): 81. doi:10.3390/d10030081.
Yang, Laura H., and Barbara A. Han. 2018. “Data-Driven Predictions And Novel Hypotheses About Zoonotic Tick Vectors From The Genus Ixodes”. Bmc Ecology 183 (1). doi:10.1186/s12898-018-0163-2.
LaDeau, Shannon L., Barbara A. Han, Emma J. Rosi, and Kathleen C. Weathers. 2017. “The Next Decade Of Big Data In Ecosystem Science”. Ecosystems 20 (2767): 274 - 283. doi:
adrian castellanos

Dr. Adrian Castellanos is the data manager and spatial analyst in the Han lab, where he supports data visualization and scripting. He received his PhD in Wildlife and Fisheries Sciences from Texas A&M University working with Dr. Jessica Light. This work focused on how natural history collections can be used to examine patterns of biodiversity and biogeography in Central American mammals, highlighting the continued importance of specimen collection and data digitization. Although he identifies as a mammalogist, Adrian has also worked on birds, amphibians, orthopterans, and ticks with projects involving disease ecology, behavioral plasticity, morphological shape change, cryptic diversity, and species distribution and occupancy modeling. His research interests include improving species distribution modeling for conservation and biodiversity work, biodiversity informatics, and helping write and troubleshoot code.

Current Projects