Skip Navigation

Faculty Directory

Melissa A. Marx, PhD

  • Assistant Professor

Departmental Affiliations

Center & Institute Affiliations

Contact Information

615 N. Wolfe Street
Room E5541
Baltimore, Maryland 21205


View Current Courses


PhD, Johns Hopkins Bloomberg School of Public Health, 2002
MPH, Johns Hopkins Bloomberg School of Public Health, 1998
BA, Texas A&M University, 1993


Melissa A. Marx, PhD, MPH is an Assistant Professor in the Department of International Health at the Johns Hopkins Bloomberg School of Public Health. She is currently leading the Bloomberg School’s support of the Baltimore City health department’s response to the COVID-19 pandemic. She is the lead author of the School’s Recommendations for a Metropolitan COVID-19 Response and a senior editor of the associated special emphasis series. She is faculty co-lead of the Surveillance Outbreak Response Team (SORT). Her non-outbreak work includes evaluating global maternal, child health and HIV/TB/malaria programs and developing methods and metrics to drive better collection and use of data for program improvement.

Dr. Marx spent over 13 years practicing epidemiology including responding and leading responses to outbreaks for the CDC, first as an Epidemic Intelligence Officer, later as a senior epidemiologist for CDC at the New York City Department of Health and Mental Hygiene and then for CDC overseas. In addition to setting agendas for, using data from and overseeing HIV/AIDS evaluation and research, she has set up and monitored surveillance systems, including for antibiotic resistant organisms such as MRSA, and has responded to outbreaks including as SARS, H1N1, Ebola, zoonotic anthrax, cholera, typhoid, food-borne illness (and others) and prepared and overseen teams responding to other various public health threats.

Honors and Awards

2019 Excellent student rating, Large Scale Effectiveness Evaluations course, JHSPH

2018 Excellent student rating, Large Scale Effectiveness Evaluations course, JHSPH

2015 Excellence in Emergency Response, Exemplary commitment and in-country contributions to the elimination of Ebola in West Africa. CDC Honor Awards

2014 Meritorious Honor Award, Outstanding dedication in defending PEPFAR Country Operational Plan & improving cost efficiency in programming, U.S. Embassy & CDC-Zambia

2013 Meritorious Honor Award, Leadership and outstanding contribution in building capacity of public health professionals, U.S. Embassy & CDC-Zambia

2013 Franklin Award, Excellent documentation of results, U.S. Embassy & CDC-Zambia

2012 Franklin Award, Superior data quality assessment, U.S. Embassy & CDC-Zambia

2011 Certificate of Appreciation, Investigating Anthrax in humans and hippos, U.S. Embassy & CDC-Zambia

2007 Katrina response award, CDC, Commissioned Corps

2005 Severe Acute Respiratory Syndrome service award, CDC, Commissioned Corps

2004 Smallpox Vaccination Program service award, CDC, Commissioned Corps

2001 Jean Coombs Award for excellence in Epidemiology, Department of Epidemiology, JHSPH

1999 Jean Coombs Award for excellence in Epidemiology, Department of Epidemiology, JHSPH

  • evaluation
  • data use
  • HIV
  • maternal child health
  • outbreak
  • surveillance

Below is a subset of recent publications and publications highlighting current work.

  • Sharfstein JM, Marx MA. Testing is Just the Beginning in the Battle Against Covid-19. The New York Times Opinion, March 30, 2020.
  • Marx MA, Gurley E, Nuzzo J, Sauer L, Limaye RJ, Moss W, Lessler J, Sharfstein JM. Recommendations for a metropolitan COVID-19 Response. COVID-19 School of Public Health Expert Insights, Johns Hopkins Bloomberg School of Public Health, April 2, 2020.
  • Miller NP, Richards AK, Marx MA, Checchi F, Kozuki N. Assessing community health worker service delivery in humanitarian settings, Journal of Global Health, 2020, 10:1.
  • Pattniak A*, Mohan D, Chikoposa S, Misomali A, Kategenza H, Marx MA. Validity and Feasibility of Cellphone-based collection of data to evaluate strength of implementation of Youth-friendly Health Services in Malawi, BMC Health Services Research, 2020, 20:221.
  • Lehman MW*, Craig A, Malama C, Kapina Kanyanga M, Malenga P, Munsaka F, Muwowo S, Shadomy S, Marx MA. (2017). Role of Food Insecurity in Outbreak of Anthrax Infections among Humans and Hippopotamuses Living in a Game Reserve Area, Rural Zambia. Emerg Infect Dis. 2017, 23(9), 1471-1477.