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Surveillance and Outbreak Response Team (SORT)

Our Team

Emily S. Gurley, PhD, MPH

Emily Gurley

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.
 



Melissa A. Marx, PhD, MPH

Melissa Marx

Dr. Melissa A. Marx is an Assistant Professor in the Department of International Health at the Johns Hopkins Bloomberg School of Public Health. She is an expert in epidemiology and evaluation who specializes in developing, disseminating and utilizing new metrics and methods to evaluate and improve international programs, focusing on maternal, neonatal, child health and nutrition and HIV, TB and malaria in low and middle income settings. Dr. Marx is committed to building sustainable capacity in the analysis and use of routine data for program improvement and has developed and evaluated learner-focused training programs for students and public health practitioners to move that agenda forward. While at CDC as an EIS officer and in the Zambia field office, she developed, conducted, and oversaw outbreak investigations and epidemiologic studies on HIV, Ebola, zoonotic transmission of anthrax, typhoid fever, cholera, food-borne illness, Hepatitis B and C, STIs, and drug resistant organisms including MRSA, among others.
 



Qifang Bi

Qifang Bi

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.
 



Catelyn Coyle

Catelyn Coyle

Catelyn is a PhD student in the Department of Epidemiology in the Infectious Disease track. Her research interests center on HIV, HCV and people who inject drugs (PWID). Her dissertation seeks to understand why, despite major advancements in HCV treatment, uptake among PWID remains low. Catelyn has experience with HIV, HCV, scientific writing for a broad audience, spatial statistical analysis, and primary and secondary data collection.



Dylan Duchen

Dylan Duchen

Dylan Duchen is a doctoral student in the Genetic Epidemiology track within the Department of Epidemiology. His research interests lie at the intersection of host-pathogen genetics, infectious disease epidemiology, and the immune response. He is particularly interested in utilizing genomic data at both the host and pathogen level to study infectious disease dynamics and the human susceptibility or resistance to infectious diseases. Prior to joining JHSPH, he received an MPH in infectious disease epidemiology and worked as a bioinformatician.
 



Kyra Grantz

Kyra Grantz

Kyra is a doctoral student in infectious disease epidemiology. Her research focuses on the feasibility of treatment-as-prevention to achieve Hepatitis C virus elimination among people who inject drugs. She is also interested in modeling fine-scale spatial and temporal dynamics of disease transmission with epidemiologic and pathogen genetic data. Kyra has collaborated closely with many public health authorities, including the US CDC, WHO, MSF, and various ministries of health to study influenza, dengue, yellow fever, Ebola, rotavirus, leprosy, and chikungunya. She has experience in the implementation and analysis of clinical trials in low-resource settings and during outbreak responses.
 



Brooke Jarrett

Brooke Jarrett

Brooke Jarrett is a doctoral student in the Department of Epidemiology in the Infectious Disease track. Ms. Jarrett uses both qualitative and quantitative methods to explore the intersection between advanced consumer technology, such as chatbots, and infectious disease. She is specifically interested in how these technologies can be used to improve healthcare service delivery in resource-constrained settings for young adults. Ms. Jarrett has experience with HIV, TB, scientific writing for lay audiences, textual analyses using natural language processing, gathering data via social media, designing mixed methods studies, and conversational Spanish.
 



Forrest Jones

Forrest Jones

Forrest is a doctoral student in the Department of Epidemiology and is also enrolled in the MHS program in Biostatistics. His dissertation work focuses on using serological data to improve estimates of cholera incidence and immunity. Forrest has experience studying diarrheal diseases, HIV, tuberculosis, vaccine-preventable diseases, and RSV. Other skills include statistical analysis, knowledge of immunology, laboratory technique, data visualization, SAS programming, and French language (beginner level). Prior to JHSPH, Forrest was an ASPPH/CDC Allan Rosenfield Global Epidemiology Fellow stationed at the CDC office in Dar es Salaam, Tanzania.
 



Kyu Han Lee

Kyu Han Lee

Kyu is a postdoctoral fellow in the Department of Epidemiology. He works primarily on child health and emerging infections. Kyu has experience with respiratory pathogens (e.g. pneumococcus, influenza) as a micro/molecular biologist and as an infectious disease epidemiologist. He is fluent in Korea and has extensive experience in Kenya and Tanzania.
 



Gideon Loevinsohn

Gideon Loevinsohn

Gideon Loevinsohn is an MD-PhD student at Johns Hopkins completing his doctoral research in Infectious Disease Epidemiology. His research focuses on acute respiratory infections in rural southern Africa and the role played by respiratory viruses. Gideon received his B.Sc in neuroscience from Brown university before beginning his medical studies at Johns Hopkins. Gideon is particularly interested in disease surveillance and outbreak response particularly in low-resource settings.
 



Jowanna Malone

Jowanna Malone

Jowanna Malone is a Doctoral student in Infectious Disease Epidemiology at Johns Hopkins Bloomberg School of Public Health. She received her B.A. in Sociology and a Master of Science in Infectious Disease Epidemiology from Harvard University. Her research focuses on HIV prevention and treatment efforts among racial and sexual minority groups (particularly surrounding PrEP use). Jowanna is especially interested in how intersectional marginal identities affect one’s HIV/STI outcomes. Jowanna is currently conducting her dissertation on identifying socioecological challenges (i.e. at the individual, community, and structural level) to achieving viral suppression among men who have sex with men (MSM) in the United States. Jowanna is experienced in qualitative research methods, scientific manuscript development, quantitative data analysis, HIV and STI testing, and survey implementation.
 



Emma Moynihan

Emma Moynihan

Emma Moynihan (née Cogan) is a doctoral student in the Department of Environmental Health & Engineering in the Exposure Sciences and Environmental Epidemiology track. She also received her MPH from the Johns Hopkins Bloomberg School of Public Health in 2018. She is specifically interested in the impacts of climate change on the etiology and transmission of diseases. Prior to graduate school, Emma was a Fulbright Scholar in Malaysia, which propelled her passion for public health. She has experience working on multiple surveillance programs on behalf of the CDC and state governments from which she brings expertise in survey design and implementation, statistical programming, and data analytics along with skills in spatial analysis.
 



Katie Overbey

Katie Overbey

Katie Overbey is a doctoral candidate in the Department of Environmental Health and Engineering and holds a masters degree in Food Science. Her dissertation focuses on improving detection of viruses in the environment. Ms. Overbey has extensive microbiology laboratory experience and environmental and food microbiology content knowledge. She also has experience in social media use for research, science communication for multiple audiences, survey design and implementation, and qualitative data analysis.
 



Neia Prata Menezes

Neia Prata Menezes

Neia Prata Menezes is a doctoral student in the Department of Epidemiology in the Infectious Disease track. Her research interests focus on understanding and overcoming barriers to HIV care and treatment among marginalized key populations such as injection drug users. She is particularly interested in leveraging interpersonal social networks of key populations to inform effective and sustainable interventions to address gaps in HIV care and treatment. Neia has extensive experience in working with Ministry of Health organizations in various countries to use HIV programmatic data for decision-making, design routine data collection tools, and evaluate surveillance systems. Other skills include statistical data analysis, scientific writing, knowledge of HIV and PMTCT, and survey implementation among key populations.
 



Katherine Robsky

Katherine Robsky

Katherine is a PhD candidate in the Department of Epidemiology. Her dissertation research uses spatiotemporal patterns to identify populations at risk for TB that could be prioritized for preventive and case finding interventions in urban Kampala. She previously completed her MPH in Infectious Diseases at University of California. She has extensive experience working in government public health agencies, both as ASPPH/CDC Allan Rosenfield Strategic Information Fellow partnering with the Ministry of Health and Human Services in Namibia and as the Surveillance and Informatics Coordinator for the California Department of Public Health TB Control Branch. Her interests include using routinely collected data for research purposes, implementation science, and application of spatial analysis methods.
 



Jean Olivier Twahirwa Rwema

Jean Olivier Twahirwa Rwema

Jean Olivier Twahirwa Rwema is a doctoral student in Infectious Diseases Epidemiology at Johns Hopkins Bloomberg School of Public Health. He received his medical degree from the National University of Rwanda and an MPH from Johns Hopkins University. Olivier’s research interests are on understanding the distribution of HIV and STIs risks and implementation of prevention and treatment programs of these infections for key populations across Sub-Saharan Africa. Olivier is fluent in English, French, Kirundi and Kinyarwanda.
 



Former Members

Lelia Chaisson, PhD

Lelia Chaisson

Lelia is a research assistant in the Department of Epidemiology. Her research interests include development and evaluation of novel strategies for TB and HIV diagnosis, prevention, and control. Her doctoral research focuses on evaluating uptake and impact of TB preventive therapy and universal antiretroviral therapy for people living with HIV in Rio de Janeiro, Brazil. Prior to JHSPH, Lelia worked as an epidemiologist at UCSF studying the implementation of novel TB diagnostics in Vietnam and Uganda. Lelia has a BA in Public Health from Johns Hopkins University, an MSc in Epidemiology from the London School of Hygiene and Tropical Medicine and a PhD in epidemiology from the Johns Hopkins Bloomberg School of Public Health.