Lark L. Coffey, Ph.D., the Principal Investigator, obtained her Ph.D. from the University of Texas Medical Branch. Before joining UC Davis in 2013, she worked at Institut Pasteur, Paris and the Blood Systems Research Institute at the University of California, San Francisco.

Hongwei Liu, M.S., Staff Research Associate, received her M.Sc in Genetics from China. She has been working in the field of molecular biology, virology, and immunology for the past 20 years. Her main current focus is to develop an effective live-attenuated vaccine against chikungunya virus infection. Hongwei recently celebrated her 10 year anniversary working at UCD!

Tim Carroll, P.hD., Assistant Project Scientist, received his PhD in Comparative Pathology from UC Davis in 2011. He has been working in the field of virology including to use non-human primate and hamster models to study disease and evaluate therapeutic antiviral efficacy for the past 20 years. Tim's current focus is to model arbovirus evolution and evaluate arbovirus vaccine efficacy in non-human primates.

Arturo Flores Rodriguez is a graduate student in the Immunology Graduate Group. Arturo was a scholar in the Postbaccalaureate Research Education Program at the University of California, Davis ( and obtained his B.S. in Global Disease Biology from UC Davis in 2020. As a PREP scholar, he worked to co-opt intrinsic mechanisms solid tumors use to evade the immune system as a possible therapeutic for immune dysregulation. As a member of the Coffey lab, he is focused on investigating how arboviruses can adapt to multiple hosts and in particular investigating how these viruses can evade the immune system of multiple hosts.

Rochelle Leung, is an undergraduate lab assistant majoring in Biochemistry at UC Davis. She is interested in studying immunology. Her primary interests are allergies and autoimmune conditions.

Adam J. Moore, MPH, is an Integrative Pathobiology PhD student. Adam recently obtained his MPH in Epidemiology of Microbial Diseases from the Yale School of Public Health and his BS in Biotech Engineering from UC San Diego. He is interested in combining his engineering and public health backgrounds with a One Health lens to investigate how pathogen evolution influences host-microbe interactions and outbreaks in zoonotic and vector-borne diseases.

Past Team Members

Will Louie, Ph.D. obtained his B.S. in Microbial Biology from UC Berkeley where he studied microbial communities in oil reservoirs. He brought that theme of community dynamics with him to UCD. He is investigating how variation in mosquito vector competence for  arboviruses is influenced by mosquito genetics and microbiota at different life stages. Will completed his Ph.D. in November 2022 and now works as a post-doctoral fellow at UCSF.

Ana Ramirez, Ph.D., received her Ph.D. from James Cook University in Australia where she studied mosquito excreta to enhance mosquito-borne disease surveillance. Ana is interested in identifying factors that can lead to the emergence and re-emergence of mosquito-borne arboviruses and developing methods to enhance their surveillance. Ana currently works as a Science Writer at Jackson Laboratories.

Erin Ball, DVM, DACVP, graduated in 2022 with a PhD from the Integrative Pathology Graduate Group. Erin is a board-certified veterinary pathologist. Her research interests include arbovirus emergence, host-virus interactions and pathogenesis and vaccine development. She investigated Zika virus pathogenesis in pregnancy and in the male reproductive tract in a rhesus macaque model. Erin currently serves as Chief of Comparative Pathology at the United States Army Medical Directorate Armed Forces Research Institute of Medical Sciences in Bangkok, Thailand.

Christopher Weiss, Ph.D., received his Ph.D. from the University of Pittsburgh where he studied the molecular basis of alphavirus restriction by an interferon-inducible exonuclease. Chris is interested in rational vaccine design against emerging pathogens and evaluated high-fidelity viral polymerase mutations as a means of improving the safety and efficacy of the live attenuated chikungunya virus vaccine. Chris currently works as a Senior Scientist at MRI Global in Kansas City, Missouri.

Katherine Young was an undergraduate Research Scholar in Insect Biology at UC Davis. She obtained a B.S. in Global Disease Biology in 2020. She is interested in the micro-level interactions between mosquitoborne viruses and their hosts.

Anil Singapuri, M.S., Staff Research Associate, has a Master’s degree from UC Davis in immunology and wrote his thesis on the use of degenerate peptides as vaccines to prevent antigenic escape common in HIV and SIV.  Anil served as our Laboratory Manager from 2016 to 2020.  Anil now works at the CAFHS.

Daniele Swetnam obtained her Ph.D. in Microbiology and Immunology from the University of Texas Medical Branch in 2018 and worked as a post-doctoral fellow at UC Davis in 2019 -2020. Daniele has a broad background in molecular virology and emerging zoonotic diseases, including flaviviruses, poxviruses, filoviruses, and arenaviruses. Her focus is in virus evolution and pathogen ecology. Her primary goals are to elucidate the mechanisms that facilitate cross-species transmission and drive the geographic expansion of insect-borne diseases. Daniele is currently a post-doctoral fellow at the University of Texas Medical Branch.


Danilo Lemos, DVM, obtained his veterinary degree from the Universidade Federal de Campina Grande in Brazil. Danilo is interested in viruses in general. His dissertation focused on understanding the viral molecular determinants of fetal disease caused by Zika virus rhesus macaques. He graduated with his Ph.D. from UC Davis in 2020. He currently works at AbCam in Brazil.




Kasen Riemersma, DVM obtained is Ph.D from UC Davis in 2019. His dissertation focused on how intra-host chikungunya virus diversity affects disease and transmission. His  research interests include arbovirus evolution and emergence, host-virus interactions, and vaccine development. Kasen worked as a post-doctoral fellow at the University of Wisconsin and is now employed at Promega.


Joie Lin, B.S., recently graduated from UC Berkeley as a Molecular Environmental Biology major and Art minor. She is currently a UC Davis School of Veterinary Medicine student interested in global health, zoonoses, and bio-inspired applications for improving health.


Jackson Stuart graduated from UC Davis in 2017 with a major in Global Disease Biology.  He is interested in how cultural, historical, and socioeconomic backgrounds of regions influence disease prevalence and interventions. His research focused on understanding which viral mutations affect chikungunya and Zika virus disease. He completed a M.S. in Pathobiology at the University of Washington and now works in the cell engineering field.


Kaitlin Xa obtained a B.S. in Biochemistry and Molecular Biology at UC Davis in 2017. She is interested in food microbial safety and hopes to enter a food science graduate program in the future. Kaitlin was a student lab assistant. She now works in the Bay Area in the field of food microbial safety.


Jay Nicholson, Ph.D., post-doctoral fellow, obtained his Ph.D. at the University of Queensland, Australia.  He then served as a Laboratory Manager focused on medical entomology and public health related to arbovirus surveillance in Western Australia. In 2017, Jay investigated the vector competence of North American mosquitoes for Zika virus. He returned to Australia in early 2018.


Radhika Iyer is a senior undergraduate majoring in Microbiology and minoring in Global Disease Biology at UC Davis. Radhika is interested in pursuing graduate school in virology or infectious disease in the future. She recently worked as an undergraduate research assistant and helps with Zika virus projects.

Brad Main, Ph.D., post-doctoral fellow, has a background in arthropod genomics and transcriptomics. He is passionate about understanding adaptation and speciation and the genetic basis of  insecticide resistance, host preference, and vector competence in mosquitoes. Brad spent 2017 exploring whether and why distinct genetic populations of Aedes aegypti vary in their ability to become infected by and transmit Zika virus.

Kelly Symmes, BS., joined our team as a DVM student interested in zoonoses and public health. She graduated with her DVM in May 2018 and is currently pursuing doctoral work in virology at Yale University. Kelly worked in the laboratory sequencing West Nile and St. Louis encephalitis viruses in California and performing phylogenetic analyses to infer genetic relatedness and origins of circulating viruses.

Cody Steiner B.S. obtained his bachelor’s degree in in Microbiology, Immunology, and Molecular Genetics from UCLA and joined the UC Davis Epidemiology Graduate Group. He earned a M.S. degree in 2018. His project focused on improving arbovirus surveillance in California by applying molecular diagnostics to novel field surveillance methods.