Andrew is an Assistant Scientist in the Department of Epidemiology. His work focuses on understanding the spatio-temporal dynamics of enteric pathogens, like cholera, and strategies to best control outbreaks. In addition, Andrew works on methods for estimating intervention effects, particularly vaccine, with observational study designs. Andrew earned his PhD in epidemiology and MHS in biostatistics from Johns Hopkins Bloomberg School of Public Health. Before coming to Hopkins, Andrew received his B.S. and M.S. in Environmental Engineering from University of Colorado and practiced as an engineer.
M. Kate Grabowski
Mary Kate Grabowski is an Assistant Professor in the Department of Pathology at Johns Hopkins University. She also works as an epidemiologist with the Rakai Health Sciences Program (RHSP) in Rakai District, Uganda. Her primary research interests include the epidemiology and transmission dynamics of sexually transmitted viral infections, local geography and structure of sexual contact networks, and viral phylodynamics. Kate’s research focuses on the transmission, prevention, and control of sexually transmitted viral infections in East Africa. She has spent nearly a decade living/working in African settings where she has been involved in various infectious disease epidemiological and laboratory-based studies. Kate is also currently a member of the Bill and Melinda Gates funded PANGEA-HIV consortium through RHSP. PANGEA-HIV aims to generate 20,000 whole genome HIV sequences to understand HIV transmission dynamics in Africa.
Emily is an Associate Scientist in the Department of Epidemiology and leads multi-disciplinary studies on the transmission and prevention of emerging and vaccine preventable diseases, such as Nipah virus, hepatitis E virus, and arboviruses. She has worked in Bangladesh for more than a decade and her interests include improving the communication and collaboration between field epidemiologists and infectious disease modelers and development of novel surveillance strategies. Her research adopts a One Health approach to the study and prevention of infectious disease, taking into account the ecological context in which human disease occurs. Emily is the Co-Director for the Child Health and Mortality Prevention Surveillance (CHAMPS) site in Bangladesh, aiming to determine the etiology of and prevent child deaths. She also works closely with the US Centers for Disease Control and Prevention’s Global Disease Detection program.
Alison Hill is an incoming Assistant Professor at the Institute for Computational Medicine at Johns Hopkins University. Her research focuses on developing mathematical and computational tools to help us better understand, predict, and treat infectious diseases. She has worked extensively on HIV/AIDS and drug-resistant infections, studying infection dynamics both within individual hosts and at the population level. Her work uses ideas from evolutionary theory, network science, statistical inference, quantitative systems pharmacology, and systems immunology. Alison is broadly interested in improving our understanding of biological systems through mathematical modeling, and in the past has worked on social contagion, the bed bug epidemic, the origin of multicellularity, human herpesviruses, T cell receptor repertoires, iron regulation in the body, the opioid crisis, and COVID-19. She has a BS in Physics from Queen's University (Canada), a PhD in Biophysics/Medical Physics from the Harvard-MIT Division of Health Sciences & Technology, and an MPH from Harvard School of Public Health. Before arriving at JHU, she was a John Harvard Distinguished Science Fellow at Harvard.
Elizabeth C. Lee
Elizabeth is a Research Associate in the Department of Epidemiology. She is interested in characterizing the spatiotemporal dynamics of infectious diseases and improving surveillance system design through the use of novel data sources and statistical modeling. Her research in the ID Dynamics group focuses on assessing the health impact of oral cholera vaccine introduction and mapping the burden of cholera. Elizabeth completed her PhD in Global Infectious Diseases at Georgetown University in 2017 and her dissertation investigated the ability for medical claims to enhance influenza surveillance design.
Kyu Han Lee
Kyu is a Research Associate in the Department of Epidemiology. He is interested in studies related to child and maternal health as well as research focused on the transmission and prevention of emerging infectious diseases. Kyu is an epidemiologist on the Child Health and Mortality Prevention Surveillance (CHAMPS) network, which aims to identify causes of childhood mortality in Sub-Saharan Africa and South Asia. He is also the Deputy Director of the JHSPH COVID-19 Training Initiative. Kyu completed his PhD in Epidemiology at the University of Michigan in 2018 and MPH at Emory University in 2014.
Justin Lessler is an Associate Professor in the department of Epidemiology researching the dynamics and control of infectious disease, with particular interest in influenza, measles, cholera and dengue. Justin works on the development and application of statistics, dynamic models and novel study designs to better understand and control infectious disease. In particular, he is interested in creating synergies between infection control practice, data collection and infectious disease dynamics.
Shaun is a PhD candidate in infectious disease epidemiology. His current work includes measles supplemental vaccination modeling and influenza epidemiology. Prior to coming to JHSPH, he worked as an epidemiologist with the CDC’s Global Disease Detection program in Cairo, Egypt, where he worked to establish and develop respiratory disease surveillance programs throughout the Middle East. He has a BS in Biology and an MPH from the University of Wisconsin.
Amy is an Assistant Professor in the department of Epidemiology. She is interested in understanding how human behavior can impact infectious disease dynamics. She uses a range of statistical and dynamical models to better understand disease transmission and control. She also works to use novel data sources to describe human populations. She primarily works in Africa and Asia supporting both field and modeling studies. She completed her PhD in Engineering and Public Policy from Carnegie Mellon University in 2014.
Derek is an infectious disease epidemiologist engaged in theoretical and field studies of disease transmission. The goal of his research is to understand the temporal and spatial dynamics of the spread of infectious diseaess in order to inform interventions to control their spread. He is specifically interested in the dynamics of dengue, influenza, measles, and chikungunya. He currently leads field studies of influenza in the US and China, and dengue and chikungunya in Thailand and India.
David Dowdy is an Associate Professor of Epidemiology at the Johns Hopkins School of Public Health, with joint appointments in International Health and General Internal Medicine (School of Medicine). His primary research interest lies in merging epidemiological data on implementation, economic evaluation, and mechanistic modeling to understand the dynamics of tuberculosis (TB) - particularly the impact of interventions to improve diagnosis and case finding. He collaborates with field teams in an array of countries including South Africa, Uganda, Zambia, Malawi, India, and Vietnam; he is also a practicing physician in urban East Baltimore and is wrapped around the little finger of his 12-year-old daughter Chesapeake.
Dr. Lauren Gardner is an Associate Professor in the Department of Civil Engineering at Johns Hopkins University and Co-Director of the Center for Systems Science and Engineering (CSSE). She leads interdisciplinary research efforts on the topic of bio-secure mobility, which utilizes network optimization and mathematical modeling to improve our understanding of disease spreading patterns and risk as a function of transportation systems, land use, climate and population demographics. She has worked on a range of infectious diseases including dengue, Zika, Measles, MERS-CoV, and Influenza. Prior to joining JHU she was a faculty member at the School of Civil and Environmental Engineering at the University of New South Wales (UNSW) Sydney. She is a leading member of the Research Centre for Integrated Transport Innovation (rCITI), and Visiting Scientist at Commonwealth Scientific and Industrial Research Organisation (CSIRO), serving as the transport lead on the DiNeMo Project.
Oliver is a laboratory scientist and infectious disease epidemiologist engaged in studies of HIV, HCV and HSV-2 both domestically and internationally. Primary areas of interest include the development of methods for estimating incidence from cross-sectional surveys, the impact of HIV subtype on disease progression, and the development of serologic and molecular tools to investigate questions related to infectious disease epidemiology. Oliver has worked in infectious disease laboratories since 1990 and holds a PhD in epidemiology, a MS in biotechnology and an MBA all from Johns Hopkins University. He is employed by the NIAID as a Staff Scientist, where he manages the International HIV & STD laboratory of Dr. Thomas C. Quinn. He also has an appointment as an Assistant Professor of Medicine in the Division of Infectious Diseases in the Department of Medicine of Johns Hopkins University and holds a joint appointment as an Assistant Professor in Epidemiology at the Johns Hopkins Bloomberg School of Public Health. He works closely with the Rakai Health Sciences Program and the HIV Preventions Trials Network.
Heather McKay is a Research Associate in the Department of Epidemiology at the Johns Hopkins Bloomberg School of Health. Her research experience has focused on the role of circulating biomarkers of inflammation and immune activation in HIV disease progression, including the role of pre-infection and early levels of inflammatory response on subsequent viral setpoint levels and inflammatory dynamics early after infection on long-term non-progression of HIV. Her recent research interests also include the interaction between HIV infection and the dynamics of cholera transmission, the immunogenicity of oral cholera vaccine among HIV-infected populations, and the characterization of global cholera epidemiology. She has also been involved with classroom instruction of both introductory and advanced epidemiology courses at Johns Hopkins for over 6 years and the revision of the 5th edition of the best-selling introductory textbook, Epidemiology (Dr. Leon Gordis). Prior to her career at Johns Hopkins, Heather spent 15 years working in the philanthropic/grantmaking sector in New York with responsibilities in program development, management, and evaluation on issues associated with ethnic conflict prevention and resolution, strengthening higher education and research in Africa, international peace and security, and support for independent scholarship. She received her BA degree in Russian History from Columbia University and her PhD in epidemiology from the Johns Hopkins Bloomberg School of Public Health.
William Moss is a Professor in the Departments of Epidemiology, International Health and Molecular Microbiology and Immunology at the Johns Hopkins Bloomberg School of Public Health and Head of Epidemiology at the International Vaccine Access Center. He is a pediatrician with subspecialty training in infectious diseases, and has worked in Ethiopia, Kenya, South Africa, Zambia, Zimbabwe and India among other countries. His broad research interests are the epidemiology and control of childhood infections in resource-poor countries. The specific focus of his current research is in understanding the impact of the HIV epidemic on measles control and eradication, the epidemiology and control of malaria in southern Africa, and the care and treatment of HIV-infected children in rural Zambia.
Isabel is an Assistant Professor in the Division of HIV, ID and Global Medicine at University of California, San Francisco. She is interested in applying novel epidemiological and statistical methods to understand the dynamics of infectious diseases. While she is interested in infectious diseases generally, most of her experience is related to vector-borne diseases such as dengue, malaria, and Zika. Isabel completed her medical training in Colombia. She joined the ID dynamics group in 2008 and completed a PhD in epidemiology and an MHS in Biostatistics at the Johns Hopkins Bloomberg School of Public Health in 2012.
Henrik is a researcher in the mathematical modelling of infectious diseases unit at the Pasteur Institut in Paris and an Adjunct Assistant Professor in the department of epidemiology at the Johns Hopkins Bloomberg School of Public Health. His interests lie in the spatio-temporal dispersal dynamics of infectious diseases, particularly arboviruses. He works on both empirical data collection and methodological development with research projects based in Southeast Asia.
Espoir Bwenge Malembaka
Espoir Bwenge Malembaka graduated in Medicine from the Université Catholique de Bukavu (UCB) and worked as a physician in the department of pediatrics at the Bukavu Provincial General Referral Hospital in eastern Democratic Republic of Congo (DRC). He obtained a Master of Public Health degree from the Makerere University in Uganda and a PhD in public health from the University of Louvain in Belgium. While working at the UCB, he played a key role in the design and conduct of field epidemiological studies in conflict and post-conflict settings of the DRC. At the Johns Hopkins University, Dr. Bwenge Malembaka is working as a post-doctoral research fellow and the DRC country supervisor of a research project aiming to assess the impact of mass oral cholera vaccination campaigns on cholera incidence and transmission dynamics in eastern DRC.
John is a postdoctoral fellow in the Department of Epidemiology. His research interests include modeling spatial disease spread to guide disease intervention strategies and developing novel methods for integrating pathogen genetic data and population susceptibility into spatial transmission models. His current work includes modeling human mobility using mobile phone data and understanding the impact of trip duration (how long travelers spend in a destination) on spatial disease dynamics. John completed his PhD in Quantitative Ecology at Griffith University in 2017, where he worked on the ecological drivers of viral transmission in bat populations and spillover to humans, and he continues to work on these questions with collaborators.
Sonia is a postdoctoral fellow in the Department of Epidemiology. She is interested in understanding how the interface of human behavior and the environment affect disease emergence and transmission. Her research in the ID Dynamics group focuses on exploring strategies for cholera control and elimination using spatiotemporal modeling and serological data. Sonia completed her PhD in Epidemiology at the University of Michigan (2018) and MPH at Johns Hopkins University (2011).
Batsirai is a postdoctoral fellow in in the Department of Pathology at the Johns Hopkins School of Medicine. His interests include within and between host viral evolutionary dynamics and infectious disease epidemiology. His current work focuses on the application of viral phylodynamics methods to study HIV-1 transmission dynamics in sub-Saharan Africa in collaboration with the PANGEA-HIV consortium. Batsirai completed his PhD in Virology at the University of the Witwatersrand (at the National Institute of Communicable Diseases), a Master’s degree in Bioinformatics at the South African National Bioinformatics Institute (SANBI) at the University of the Western Cape (South Africa), and a Bachelor of Science (Hons) degree in Biotechnology from Chinhoyi University of Technology (Zimbabwe). He is a James Gear International Research Fellow.
Clif is a postdoctoral fellow in the Department of Epidemiology. He is interested in using statistical modeling and phylogenetics to investigate pathogen persistence in animal reservoirs and ecological drivers of pathogen spillover. His research in the ID Dynamics group focuses on the ecological factors that affect viral transmission and spillover between bats and humans in Bangladesh. Clif completed his PhD in Ecology at Colorado State University in 2020, where he studied the infection dynamics and evolution of bacterial infections in bats and their vectors.
Hannah is a postdoctoral fellow in the Department of Epidemiology. She in interested in combining fieldwork with computational modeling to understand and prevent the spread of infectious diseases. Her research in the ID Dynamics groups focuses on understanding how human mobility in rural areas impacts the transmission of malaria and mapping the spread of malaria in Northern Kenya. Hannah completed her PhD in Biomedical Engineering at Duke University in 2017, where she used a combination of computational modeling and clinical isolates to better understand how to characterize and control antibiotic resistant bacteria. She spent the following year as a visiting fellow at the London School of Hygiene and Tropical Medicine, where she focused on identifying novel vector control methods to reduce malaria transmission.
Javier is a postdoctoral fellow in the Department of Epidemiology. He is interested in the environmental and social-ecological factors that drive the transmission dynamics of infectious diseases with a particular emphasis on water-related diseases. His research in the ID Dynamics group focuses on exploring the link between of climate, hydrology and cholera in sub-Saharan Africa in the perspective of developing a cholera risk forecast system for the region. Javier completed his PhD in Environmental sciences and engineering at the Ecole Polytechnique Fédérale de Lausanne. (CH, 2018) where he focused on the eco-hydrological drivers of schistosomiasis in Burkina Faso.
Kathryn is a postdoctoral fellow in the Department of Epidemiology. She is interested in utilizing empirical data and mathematical models to better understand the factors the drive infectious disease transmission. Her research in the ID Dynamics group focuses on characterizing human movement patterns and determining the most accurate way to account for mobility in disease transmission models. Kathryn completed her PhD in Population Biology, Ecology, and Evolution at Emory University in 2019, where she examined the impact of dynamic human mobility patterns on dengue virus transmission heterogeneity.
Kirsten is a Postdoctoral Fellow in the Department of Epidemiology. She is interested in ways that diverse data sources and methods can be harnessed to improve our understanding of infectious disease persistence and spread. Her research in the ID Dynamics group is focused on designing studies that utilize clinical and serological data in epidemiological models to improve surveillance and guide interventions for cholera and SARS-CoV-2. Kirsten completed her PhD in immunology at New York University School of Medicine (2017). Before coming to JHSPH, she conducted post-doctoral research at the Institute for Health Metrics and Evaluation at the University of Washington (IHME), where she used geospatial models to map infectious diseases and their treatments.
Amy is a postdoctoral fellow in the Department of Epidemiology. She is interested in characterizing and leveraging the complex interaction between human demography and infectious disease dynamics for disease control. Her research in the ID Dynamics group focuses on exploring strategies for measles and rubella control and elimination using modeling and serological data. Amy completed her PhD in Demography at Princeton University (2016) and MPH at Emory University (2011).
Shirlee is a postdoctoral fellow in the Department of Epidemiology at the Johns Hopkins Bloomberg School of Public Health. She is interested in using genomic epidemiology to track the spread of infectious diseases. Her research in the ID Dynamics group focuses on understanding the transmission of cholera and developing methods to integrate pathogen sequence data and epidemiological models. Shirlee completed her PhD in Systems Biology at Harvard University in 2018, where she used phylogenetic methods to understand viral transmission during outbreaks.
Sophie is a PhD student in Biostatistics. Her interests include statistical methods for leveraging genetic and proteomic data to better understand malaria transmission. Sophie holds a BA in mathematics from Bowdoin College.
Qifang is a PhD student in the infectious disease dynamics group. She received her MHS in Epidemiology from JHSPH in 2014 and B.S.E in biomedical engineering from Duke University in 2012. While at JHSPH, Qifang spent a summer in Bangladesh implementing the WASH Benefits Saliva Study. She is interested in studying spatio-temporal dynamics of disease transmission and the implications on control measures, and her works have focused on Cholera and Dengue.
Katelyn is a MHS student in infectious disease epidemiology at Johns Hopkins Bloomberg School of Public Health. Her research interests include outbreak control, vaccine and intervention application and evaluation. Before joining IDD, she studied global health (BA) and biological sciences, biology and society (BS) at Arizona State University.
Ensheng (Frank) Dong
Ensheng (Frank) is a PhD student of the Department of Civil and Systems Engineering (CaSE), the Center for Systems Science and Engineering (CSSE) at the Johns Hopkins University, and the infectious disease dynamics (IDD) group at the JHU Bloomberg School of Public Health. He is interested in interdisciplinary research on network science, mobility modeling, machine learning, spatial analysis and visualization, and infectious disease. His recent work includes forecasting measles risk in the US and the Pacific Island Countries and Territories (PICTs), visualizing and modeling the novel coronavirus (COVID-19), and predicting dengue outbreaks in Sri Lanka.
Hongru is a Ph.D. student at the Center for Systems Science and Engineering (CSSE) and the Infectious Disease Dynamic Group. He received his MS in Industrial Engineering from the University of Wisconsin Madison in 2019 and BS in Material Chemistry from the University of Edinburgh in 2017. His research interests are network modeling, machine learning, and optimizations. His current works have focus on outbreak modeling for novel coronavirus, understanding Zika transmission patterns in Puerto Rico, and Flu transmission patterns in the entire United States.
Forrest began his PhD in Infectious Disease Epidemiology in 2017 and is also enrolled in the MHS in Biostatistics. His dissertation work focuses on using serological data to improve estimates of cholera incidence and immunity. His research interests also include outbreak investigation, zoonotic infections, and implementation of immunization programs. Prior to joining the group, he was an ASPPH/CDC Allan Rosenfield Global Epidemiology Fellow stationed at the CDC office in Dar es Salaam, Tanzania. He received his MPH in Epidemiology of Microbial Diseases from Yale School of Public Health in 2015 and BS in Chemical Biology from UC Berkeley in 2013.
Kyra is a PhD student in infectious disease epidemiology. Her interests include modeling fine-scale spatial and temporal dynamics of disease transmission, as well as assessing the effectiveness of intervention strategies through both theoretical and field-based research. Before joining JHSPH, Kyra was a research associate at MSF-Epicentre in Paris, France, focusing on implementation and analysis of vaccine trials, and a research assistant with the University of Florida Infectious Disease Dynamics group. She holds a BA in biology and molecular engineering from the University of Chicago.
Lauren is a MHS student in infectious disease epidemiology. Her research interests include vaccine development and implementation, emerging infections, and intervention evaluation. Prior to joining IDD, she worked as a post-baccalaureate fellow for the Johns Hopkins Drug Discovery group. She holds a BS in biology and anthropology from the University of North Carolina at Chapel Hill.
Natalya is a PhD student in general epidemiology and methodology. She is interested in studying and refining methods used in operational research, focusing on epidemiology of infectious diseases and outbreak control in humanitarian settings. She received her MPH in Global Epidemiology from Emory University and BS in Applied and Computational Mathematics from Caltech. Prior to joining the group, she worked with International Medical Corps, providing support to humanitarian response in Chad, Central African Republic, and at headquarters.
Claire is a PhD student in infectious disease epidemiology. She is also planning to pursue a concurrent MHS in biostatistics. Her research interests include modeling of transmission dynamics, emerging zoonotic infections, and pandemic preparedness. Prior to joining JHSPH, Claire received a BS from Yale University in applied mathematics.
Maya is a research program coordinator in the Department of Epidemiology at the Johns Hopkins Bloomberg School of Public Health. She previously worked with the ID Dynamics group on the Cholera Dynamics project as a visiting undergraduate researcher. She received her B.S. in Biology from the Pennsylvania State University in 2020.
Joshua Kaminsky is a programmer for the Department of Epidemiology at Johns Hopkins University. His background is in mathematical data analysis, machine learning, and high performance computing. Now he works on modeling cholera and dengue, and maintains a server for the group.
Qulu Zheng is a cholera taxonomy data coordinator in the infectious disease dynamics group. She’s interested in modeling infectious disease transmissions using epidemiology and statistical methods. Her recent research focuses on the dynamics of cholera outbreaks in sub-Saharan Africa. She completed her MHS in epidemiology in 2019 from the Department of Epidemiology at the Johns Hopkins Bloomberg School of Public Health.
Friends, Former Students, etc.
Ben left Hopkins and became Omidyar postdoctoral fellow at the Santa Fe Institute working on mathematical models of the spread of disease in heterogenous environments. He has also developed models of the spread of arboviruses (dengue, yellow fever, chikungunya, zika, rift valley fever) in primate populations in Senegal as well as developed novel methods of predicting incidence of infectious diseases using search query data. He is currently working at the Institute for Disease Modeling in Seattle. He recieved a PhD in epidemiology in 2013 and an ScM in biostatistics in 2010 from the Johns Hopkins School of Public Health. Ben received a BS in mathematics and a BS in biochemistry from the University of Washington in 2008.
Laura was a research assistant in the Department of Epidemiology at the Johns Hopkins Bloomberg School of Public Health. She received her B.S. in public health sciences from the University of Massachusetts Amherst in 2016.
Sudarat's research is about biophysics and stochastic modeling. She is working on mathematical model of chikungunya, influenza, and leptospirosis. She is also interested the temporal and spatial dynamics to understand and interventions of their spread. She received an MSc degree in Physics from Physics Department, Mahidol University, Bangkok, Thailand, in 2007.
Lelia completed her PhD in infectious disease epidemiology in 2019. Her research interests center on tuberculosis and HIV, including global epidemiology and control, prevention, and diagnostics. Her current research is based in Brazil and Uganda, and focuses on evaluating strategies to improve uptake of tuberculosis preventive therapy and the population-level impact of interventions to increase HIV and TB testing and treatment initiation.
Hannah joined the ID Dynamics group as a postdoctoral fellow in November 2013. She worked on developing and using mathematical and statistical models to further understand the dynamics of dengue transmission. This included work on the differences between serotypes, the infection to case ratio and the interaction between cross-protection and enhancement. She was interested in how this understanding can be increased by using combinations of multiple data types. Hannah completed a PhD at Imperial College, London, focused on within host modelling of dengue infection. This work aimed to understand the processes driving infection dynamics in both primary and secondary infections. Extensions to this work considered the inclusion of a realistic representation of virus dynamics in models of dengue transmission, with application to assessing the impact of Wolbachia infected mosquitoes. Hannah has a BA in Mathematics from the University of Oxford (2007) and an MSc in Epidemiology from Imperial College (2009). After Hopkins, She joined the Oxford University Clinical Research Unit (OUCRU) in Ho Chi Minh city, Vietnam as a postdoctoral researcher.
Ken is a software developer who worked with the Hopkins Infectious Disease Dynamics Group from 2011 to 2015. He has a background designing and building agent-based models to simulate phenomena such as epidemics, liver tissue, cartel behavior and small-unit military operations. Before coming to Hopkins, he worked for various consulting and internet-software companies. He is interested in the study of complex systems using a spectrum of modeling approaches and the development of tools tointegrate and validate these methodologies.
Byran worked with the Infectious Disease Dynamics group on the Fluscape project. His research interest was in influenza transmission and healthcare-associated infections (HAI) dynamics. While at JHSPH, Byran served as a PHASE intern at the Maryland Department of Health, where he advised on HAI reporting requirements for the state. Byran graduated from Harvard University in 2011 with a BA in History & Science and a minor in Global Health & Health Policy, and graduated from JHSPH in 2014 with an MS in Epidemiology. He currently resides in New York City and works as a data scientist at Quartet Health.
Ellen is a PhD student in the Department of International Health. She researches the impact of cross-border human population movement on malaria transmission in eastern Zimbabwe and, in the IDD group, helps ensure data quality for the cholera database. Prior to joining Johns Hopkins, she worked as an engineer on WASH projects in South Asia and managed business operations for a science kit company.
Isabella Gomes is a Master of Public Health student in the Department of Epidemiology at Johns Hopkins Bloomberg School of Public Health. She received her BA in infectious disease ecology from Princeton University in 2016 and her MA in investigative reporting from Columbia Journalism School in 2017. She is interested in the modeling and analysis of infectious disease dynamics, and the epidemiology of tuberculosis in the U.S.
Katherine (Katie) is a PhD candidate in infectious disease epidemiology. Her research interests include strategies for reducing healthcare-acquired infections, Gram-negative antimicrobial resistance in inpatient settings, and the development of evidence-based healthcare epidemiology and antimicrobial stewardship policies. Her doctoral research focuses on piloting rectal screening in ICU patients for a class of highly resistant bacteria, carbapenem-resistant Enterobacteriaceae (CRE), in order to dissect transmissibility heterogeneity within the bacterial class and to develop targeted screening algorithms to identify patients at high risk of asymptomatic CRE carriage. Prior to JHSPH, she practiced FDA law in Washington, D.C., including work on drug shortages policy development and legislation, Good Manufacturing Practices (GMP) enforcement, and antibiotics in livestock regulations. She received a post-graduate diploma in public health from the University of Auckland in New Zealand in 2013, received her JD from Columbia Law School in 2010, and holds a BA in philosophy from Dartmouth College.
Matt joined the ID Dynamics group as a research assistant in July 2014, and worked as a postdoctoral fellow from January 2015. He worked on measles prediction and the use of open measles data to determine control strategies. Matt completed a PhD at the University of Warwick, UK, focused on the impact of heterogeneity in human mixing on epidemics in 2015. Matt received an MMath in Mathematics from the University of Oxford (2008) and an MSc in Complexity Science from University of Warwick (2010). He now works at Oxford University Clinical Research Unit (OUCRU) in Ho Chi Minh City, Vietnam as a postdoctoral researcher.
Marisa completed her PhD in infectious disease epidemiology in 2018. Her work focuses on malaria and vector dynamics, intervention evaluation, and the contribution of human movement patterns to malaria transmission in southern Africa. Prior to coming to JHSPH, she worked at the CDC's Center for Global Health and Emory University on topics such as cholera, HIV, refugee health, and child protection in the US and abroad.
Yanjie obtained her master's degree in infectious disease epidemiology. She has a Bachelor of Medicine (2012) and Bachelor of Arts in Economics (2012) from Peking University.
Keya Joshi is an epidemiologist whose research interests include the development and application of novel statistical and epidemiologic methods to model the spread of infectious diseases. Her recent work focuses on developing statistical models to inform Zika control policies in the Americas, as well as characterizing the Ebola outbreak in Liberia. She completed her MHS in infectious disease epidemiology in 2017 from JHSPH.
Lindsay is a postdoctoral fellow in the department of Epidemiology at the Johns Hopkins Bloomberg School of Public Health. Her research interests include applying mathematical and statistical techniques to basic and applied questions on the ecology and evolution of infectious diseases. Currently she is working on using statistical and mathematical techniques to understand the spread of dengue in Thailand. Lindsay completed her PhD in Biology at McMaster University focusing on modeling the effects of clinical immunity to malaria on disease spread and control and on calculating the reproductive number in a finite population of susceptible hosts. Lindsay has a Bachelors of Science in both Zoology and in Mathematics from the University of Florida (2010).
Jessica Ladd is a former PhD student in infectious disease epidemiology at JHSPH. She received an MPH from Johns Hopkins in 2011 and a BA is Public Policy/Human Sexuality from Pomona College in 2008. She is the founder and CEO of Sexual Health Innovations.
Stephen was a postdoctoral fellow in the Department of Epidemiology. His work included estimating cholera incidence rates based on serological surveys. Stephen completed his PhD in Biostatistics at the University of Massachusetts (2019); the title of his doctoral thesis dissertation was “Methods for making policy-relevant forecasts of infectious disease incidence”. Stephen is now a data scientist at Certilytics.
Rachel obtained her master degree in the Department of International Health concentrating in Global Disease Epidemiology and Control. She worked as a graduate research assistant with the Infectious Disease Dynamics group to conduct a systematic literature review on the incubation periods for causes of viral gastroenteritis. Rachel used this research to complete her master’s thesis, which evaluated the recommendations made in The Control of Communicable Diseases Manual, a widely used resource in international public health, for clinically differentiating causes of acute gastroenteritis in the field. After receiving her masters, Rachel left Hopkins to pursue an MD at Baylor Medical College.
Alison (Su-Hsun) Liu
Alison earned her MPH degree in 2008 and PhD degree in epidemiology in 2012 from the Johns Hopkins School of Public Health. In her doctoral thesis, she has described the temporal variability of HPV DNA and determining how menstrual phases affected the variable detection of HPV in a natural history study by applying event history analysis and time series analysis methods, respectively. After graduation, Alison has shifted her research interests towards the natural history of and host determinants for Staphylococcus aureus colonization in at-risk populations. She is also interested in determining how the intricate interplay between host hormonal status and abdominal adiposity affects the host’s risk for infection or infection outcomes. Alison received her medical degree in 2000 from National Taiwan University.
Kaitlin Rainwater Lovett
Kaitlin worked with the Infectious Disease Dynamics group to perform systematic reviews, acquire data and implement laboratory testing for projects surrounding immunity to dengue and influenza viruses. As a post-doctoral researcher in infectious disease epidemiology, Kaitlin developed human antigenic cartography to inform epidemiological measures of dengue virus infection and performed a systematic review of influenza interventions in long-term care facilities. Kaitlin left for a position at the Applied Physics Lab.
Zach was a research program coordinator in the Department of Epidemiology at the Johns Hopkins Bloomberg School of Public Health. He received his B.S. in Biology from the University of Maryland Baltimore County in 2014. Zach left his position to work at the Baltimore City Health Department as a Data Analyst.
C. Jessica Metcalf
Luis Mier-y-Teran did his undergraduate studies at UNAM, in Mexico city and then obtained a PhD in Physics at Northwestern University in 2010 working with professors, Mary Silber and Vassily Hatzimanikatis. His thesis research was on the mathematical modeling of protein synthesis from a dynamical systems perspective. His current interests lie in mathematical epidemiology. He worked with the ID Dynamics group on population models of dengue and other diseases.
Sean was a postdoctoral fellow in the Department of Epidemiology at Johns Hopkins University from 2013-2017. His research interests include the ecology and epidemiology of water-borne infectious diseases. His primary research focus is the epidemiology of cholera in Africa. He is currently modeling cholera vaccination strategies and developing statistical modeling techniques to map the spatial and spatiotemporal burden of cholera throughout Africa. He has also studied the dynamics and ecology of other diseases including plague, Ebola, MERS, chikungunya, and Lyme disease. Sean has a PhD in Zoology from Oregon State University and was previously a Climate and Health Posdoctoral Fellow with the National Center for Atmospheric Research (NCAR) and the Centers for Disease Control and Prevention (CDC).
Eva graduated from the University of Pennsylvania in 2010 with BA in Cognitive Science. She worked in the department of epidemiology at the Johns Hopkins School of Public Health on the SMART project with Derek Cummings, managed this site, and coordinated ID Dynamics activities from 2011-2013. She left Hopkins to pursue her MPH at Columbia University.
Talia completed her PhD in infectious disease epidemiology at the Johns Hopkins Bloomberg School of Public Health. Her interests include understanding seasonal forcing mechanisms of childhood respiratory infections, influenza dynamics and control strategies, and the evolution and animal-host interactions of zoonotic diseases.
Nick is a biostatistician whose research focuses on statistical inference in communicable disease settings. He is currently a Research Assistant Professor in the Division of Biostatistics and Epidemiology at the University of Massachusetts, Amherst. After earning his PhD in Biostatistics at Johns Hopkins, he completed a post-doc in the Hopkins Infectious Disease Dynamics group. He also has a BA in English Literature from Carleton College. Nick's primary research interests are in developing models for complex and dynamic disease systems, developing statistical methods that can draw accurate inferences from disease surveillance data, and optimizing design and analysis strategies for cluster-randomized studies. At UMass, he teaches "Introduction to Statistical Computing and Data Visualization" using R and is the author of several R packages.
Steven is a professor of Infectious Disease Dynamics in Imperial College London. He studies the transmission of human pathogens. He conducts field studies, analyses data and uses mathematical models to look at scientific questions that are relevant to public health: how does our pattern of social contacts affect the transmission of respiratory infections? How much more severe is one strain of influenza than another? How far does influenza penetrate into rural areas after it sweeps through cities?
Kathryn (Katie) completed her PhD in infectious disease epidemiology at the Johns Hopkins Bloomberg School of Public Health in 2017. Katie's research interests include HIV transmission and sexual network dynamics. Her dissertation includes the simulation of sexual networks consistent with survey data in South Africa, and simulating transmission of HIV on these consistent networks to assess network effects on HIV interventions. Her previous work has included a range of HIV-related topics focused in Southern Africa and the United States.
Isadora is an MHS student in infectious disease epidemiology at the Johns Hopkins Bloomberg School of Public Health. Her interests include outbreak investigations and studying the impact of disasters and crisis-related events on disease transmission patterns. She received her B.A. in Public Health Studies and Romance Languages from Johns Hopkins University in 2019.
Kerry is an MD/DrPH student in international Health. Her research interests relate to cholera, malaria and humanitarian relief. She is currently working on projects related to cholera in refugee camps and the DRC and a malaria mapping epidemiology project in the Hill Tracts of Bangladesh. Kerry has a B.A. in Chemistry and International Studies from Kenyon College (2004) and an MPH from Johns Hopkins (2007). Before coming to school she received a Fulbright grant to research the implications of large dam projects on communities in northeast Thailand. She later worked at a clinic on the Thai-Burma border with Burmese populations seeking healthcare, where her research related to barriers to access to healthcare and human rights violations among Burmese populations.
David is interested in the ecology, epidemiology, and economics of infectious diseases. His primary focus is on malaria, though he has also worked on influenza, MRSA, cholera, rabies, dengue, and even some infectious diseases of plants. Basic research questions include the spatial dynamics of pathogen transmission, the measurement of transmission, the evolution of resistance, and the bioeconomics (i.e. the interplay of economic and biological factors) for infectious diseases. He also has an interest in translating knowledge into policy. He is a part of RAPIDD (Research and Policy for Infectious Disease Dynamics), the Malaria Atlas Project, and the Malaria Elimination Group.
Saki received her ScM in infectious disease epidemiology from JHSPH in 2013, and is currently pursuing her PhD at Princeton University. She is interested in the modeling and analysis of infectious disease dynamics and their control measures, and completed her Masters thesis with Dr. Justin Lessler on the spatial distribution of measles immunization uptake in Eastern Africa. Previously, she worked as a research assistant at the Center for Communicable Disease Dynamics at the Harvard School of Public Health, where she studied the temporal dynamics of seasonal influenza strains. Saki received her BA in Applied Mathematics from Harvard College in 2011.
Jungen was a research assistant in the department of epidemiology at the Johns Hopkins School of Public Health. She managed this website and coordinated activities for the ID Dynamics group. She received her BS in Environmental Geoscience from Boston College in 2011. She left Hopkins to pursue her MPH degree at Columbia University Mailman School of Public Health.
Carla is an infectious disease epidemiologist focusing on behavioral and social challenges of disease prevention. At Hopkins, her research largely focused on barriers to HIV prevention and care in marginalized populations in Sub-Saharan Africa, Thailand, Vietnam and Russia, and cholera prevention. Carla left Hopkins to pursue a career as an epidemiologist at the CDC.