Derek A. Cummings
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 diseases 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 China and dengue and chikungunya in Thailand and India. He is an investigator on a study to understand the dynamics of sylvatic arbovirus transmission among multiple species of primates in Senegal, a member of the Vaccine Modeling Initiative, and is a part of the University of Pittsburgh's MIDAS Center for Excellence. He teaches two courses,"Concepts and Methods in Infectious Disease Epidemiology" and "Infectious Disease Dynamics: Theoretical and Computational Approaches," at Hopkins.

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Justin Lessler
Justin Lessler is an Assistant 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.

JHSPH Faculty Page | Google Scholar Page

  Andrew Andrew Azman
After working in the US and Sub-Saharan Africa as an environmental engineer on projects aimed at improving community water and sanitation infrastructure, Andrew is currently a Research Associate in infectious disease epidemiology. His primary interests include understanding the role of the environment in disease transmission, and the role of vaccination in response to water-related diseases. Andrew’s research focuses on modeling the spatio-temporal dynamics of waterborne pathogens, like Vibrio cholerae, and their implications for different prevention and control strategies.

Kate Grabowski
Mary Kate Grabowski is an Assistant Scientist in the Department of Epidemiology 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.

  Isabel Isabel Rodriguez
Isabel is a Research Associate in the ID dynamics group. 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, leishmaniasis and chikungunya. Before coming to Hopkins, 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.



David Dowdy
David Dowdy is the B. Frank and Kathleen Polk Assistant Professor of Epidemiology at Johns Hopkins. His primary research explores the epidemiology, dynamics, and economics of TB diagnosis and treatment. David finished his MD/PhD at Hopkins and a residency in internal medicine at UCSF before returning to the faculty at Hopkins in 2011. He is a member of the steering committee of the Gates Foundation's TB Modeling and Analysis Consortium (TB-MAC), sees patients in internal medicine at East Baltimore Medical Center (an urban outpatient clinic), and receieved the International Union Against TB and Lung Disease's 2012 Young Investigator Award. David has particular interests in mentoring a new generation of TB modelers, exploring relationships between biology and human behavior with respect to diagnostic testing, seeing the outdoors, playing tennis/basketball, and expanding the Moshi Monster collection of his 9-year-old daughter, Chesapeake.

JHSPH Faculty Page | Google Scholar Page

  Oliver Laeyendecker

Oliver Laeyendecker
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 senior research associate, where he manages the International HIV & STD laboratory of Dr. Thomas C. Quinn. He also has an appointment as an Instructor of Medicine in the Division of Infectious Diseases in the Department of Medicine at the Johns Hopkins University. He works closely with the Rakai Health Sciences Program and the HIV Preventions Trials Network.

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William Moss
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.

JHSPH Faculty Page


Nicholas G. Reich
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.

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  dave smith

David Smith
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. He teaches a new course at JHSPH entitled, "The Feasibility of Malaria Eradication."

JHSPH Faculty Page | Google Scholar Page

  Carla Zelaya photo

Carla E. Zelaya
Carla is an infectious disease epidemiologist focusing on behavioral and social challenges of disease prevention. Her research has largely focused on barriers to HIV prevention and care in marginalized populations in Sub-Saharan Africa, Thailand, Vietnam and Russia. More recently Carla has started to work in Cholera prevention globally. She has a particular interest in work ensuring the valid assessment of complex interventions, including appropriate study design, correct selection and un-biased enrollment from target and source populations, and valid measurement of key variables. Carla is interested in developing effectiveness research for the prevention of various infectious diseases across multiple geographical and socio-economic contexts.

JHSPH Faculty Page



  Hannah Clapham
Hannah is a postdoctoral fellow and joined the ID Dynamics group in November 2013. Currently she is working on developing and using mathematical and statistical models to further understand the dynamics of dengue transmission. This includes work on the differences between serotypes, the infection to case ratio and the interaction between cross-protection and enhancement. She is also 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).
  Luis Luis Mier-y-Teran
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 joined the ID Dynamics group in the fall of 2010 to work on population models of dengue and other diseases.
  Sean Moore
Sean is a postdoctoral fellow in the Department of Epidemiology at Johns Hopkins University. 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).
  Kaitlin Kaitlin Rainwater Lovett
Over the past decade, Kaitlin Rainwater Lovett has performed public health research and diagnostics in academic institutions and state and federal governments with an emphasis on combining virology and epidemiology. Kaitlin has worked with the Infectious Disease Dynamics group since 2009 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 is currently developing human antigenic cartography to inform epidemiological measures of dengue virus infection and performing a systematic review of influenza interventions in long-term care facilities.
  Henrik Henrik Salje
Henrik is a postdoctoral fellow in the department of epidemiology at the Johns Hopkins Bloomberg School of Public Health. He is currently working as a visiting researcher in Simon Cauchemez's mathematical modeling unit at the Pasteur Institute in Paris. His interests lie in the spatio-temporal dispersal dynamics of infectious diseases, including the impact of immunity on the distribution of dengue cases in urban and rural settings. Prior to starting his PhD, he worked in the investment banking sector in London, UK, using modeling approaches to advise corporate and governmental organizations on financial and operational matters. He has a Bachelors and Masters degree in Biochemistry from Oxford University, a Masters degree in Biostatistics from Johns Hopkins University and a PhD in Epidemiology, also from Johns Hopkins.


  Byran Dai
Byran is a second year master's student in infectious disease epidemiology. His current research interests include the impact of childhood contacts 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. Prior to his graduate studies, Byran worked as a research assistant in the Division of Global Health at the Massachusetts General Hospital for Children. Byran graduated from Harvard University in 2011 with a BA in History & Science and a minor in Global Health & Health Policy.
  Yanjie Huang
Yanjie is a 2nd year ScM student in infectious disease epidemiology. She has a Bachelor of Medicine (2012) and Bachelor of Arts in Economics (2012) from Peking University. Driven by her passion for modeling, her goal is to apply multidisciplinary knowledge into the field of infectious disease dynamics. Prior to the master’s program at Johns Hopkins, her research experience has involved several different fields including Medicine, Epidemiology, Sociology and Economics. Currently, she is focused on understanding the nature and pattern of human mobility and its impact on influenza through the FluScape project.
  Jessica Ladd Jessica Ladd
Jessica Ladd is a PhD student in infectious disease epidemiology. She is interested in understanding the impact of sexual network dynamics on STI spread, and in using anonymous partner notification to leverage these network properties to combat disease. Jessica's background is in teaching health education with Aim High and the Claremont AIDS Project, conducting policy research and advocacy with The AIDS Institute and the White House Domestic Policy Council, and in researching and creating sexual health websites such as So They Can Know. She received an MPH from Johns Hopkins in 2011 and a BA is Public Policy/Human Sexuality from Pomona College in 2008.
  Talia Quandelacy
Talia is a PhD student in infectious disease epidemiology. Her interests include understanding seasonal forcing mechanisms of childhood respiratory infections, influenza dynamics and control strategies, and the evolution of zoonotic diseases. Prior to JHSPH, she completed her ScM in Epidemiology at Harvard T.H. Chan School of Public Health and was a diversity scholar at the Center for Communicable Disease Dynamics, where she studied risk factors associated with excess influenza-associated mortality in the United States. As an ORISE Fellow, she worked on international febrile and vector-borne illness surveillance and policies and malaria drug resistance surveillance at the Department of Defense’s Global Emerging Infections Surveillance and Response System.  While pursuing her MPH in Global Health at Emory University, she conducted research on zoonotic diseases at the Medical Ecology Unit of CDC ‘s Special Pathogen Branch in collaboration with the US Naval Medical Research Unit-6 in Peru. She received her BS in Biology|Community Health from Tufts University.  
  K Shannon Kerry Shannon
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.
  sean Shaun Truelove
Shaun is a PhD student 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 (2007) and an MPH (2010) from the University of Wisconsin.


  steve carroll Steve Carroll
Steve is a software developer who joined the Hopkins Infectious Disease Dynamics Group in 2015. He has experience in ecological modeling, ontological modeling, and natural language processing. He has worked in healthcare and nonprofit environments, as well as academic environments. He is interested in computational efficiency and broadening his understanding of statistical modeling.
  Qifang Bi
Qifang is a research assistant and project coordinator 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. She is interested in studying spatio-temporal dynamics of disease transmission and the implications on control measures. While at JHSPH, Qifang spent a summer in Bangladesh implementing the WASH Benefits Saliva Study, and she completed her master's thesis with Dr. Justin Lessler on microscale spatial clustering of cholera risk factors in Arichpur Tongi Bangladesh.
  Jungen Yi
Jungen is a research assistant in the department of epidemiology at the Johns Hopkins School of Public Health. She manages this website and coordinates activities for the ID Dynamics group. She received her BS in Environmental Geoscience from Boston College in 2011.


  althouse Ben Althouse
Ben is a 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 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.
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  sudarat Sudarat Chadsuthi
Sudarat is a PhD student in Physics department, Mahidol University. Her 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.
kenwater Ken Cline
Ken is a software developer who joined the Hopkins Infectious Disease Dynamics Group in 2011. 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.

Emily S Gurley
Emily is an infectious disease epidemiologist and the Interim Director for Communicable Diseases at the icddr,b in Dhaka, Bangladesh where she leads studies on the transmission and epidemiology of a variety of emerging and vaccine preventable diseases, including Nipah virus, Japanese encephalitis, hepatitis E virus, cholera, dengue, Chikungunya, and rotavirus. She is interested in improving the communication and collaboration between field epidemiologists and infectious disease modelers, development of novel surveillance strategies, and uses 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 an Adjunct Assistant Professor in the Department of Epidemiology and teaches the Public Health Surveillance course at the Johns Hopkins’ Summer Institute for Epidemiology and Biostatistics. She is a consultant for the Research and Policy on Infectious Disease Dynamics (RAPIDD) program at the Fogarty Center, National Institutes of Health and is a key collaborator for the US Centers for Disease Control and Prevention’s Global Disease Detection site in Bangladesh.

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  Rachel Lee Rachel Lee
Rachel is a second year master’s student in the Department of International Health concentrating in Global Disease Epidemiology and Control. She is currently working 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.
  Alison Liu Alison (Su-Hsun) Liu
Alison is current assistant professor at School of Medicine, Chang Gung University, and physician-scientist at Department of Family Medicine, Chang Gung Memorial Hospital in Taiwan. 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. She earned her MPH degree in 2008 and PhD degree in epidemiology in 2012 from the Johns Hopkins School of Public Health. Alison received her medical degree in 2000 from National Taiwan University.
  Eva Noble

Eva Noble
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 is pursuring her MPH at Columbia University currently.

  Saki Takahashi, ScM student Saki Takahashi
Saki received her ScM in infectious disease epidemiology from JHSPH in 2013, and is currently a research assistant for the Vaccine Modeling Initiative in the Department of Ecology and Evolutionary Biology 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.


2012 Derek Cummings - Site Design by Ben Althouse