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Department of


The Johns Hopkins Bloomberg School of Public Health was ranked #1 in Epidemiology by peers in the 2024 - 2025 U.S. News & World Report Rankings. We improve the public’s health by training epidemiologists and advancing knowledge concerning the causes and prevention of disease and the promotion of health.

Epidemiology Headlines

Racism Is A Public Health Problem

The Department of Epidemiology denounces individual and systemic racism in all its forms.

What We Do in the Department of Epidemiology

The Department of Epidemiology is focused on generating fundamental and transformative knowledge to improve public health. We are committed to having a diverse and inclusive Departmental community that provides unparalleled training for the next generation of epidemiologists in the competencies, practice, and translation of epidemiology.

Epidemiology Highlights


autonomous department of epidemiology in the world


different research tracks


countries with active research projects


primary faculty

Epidemiology Programs

Within four degree programs (three master's and one doctoral), students have opportunities to engage directly with faculty, study internationally, and complete practicums in the field.

Students can choose from eight different tracks to focus their study and research. Additionally, there are several pre- and postdoctoral training programs available.

Our students graduate with marketable skills and real-world experience, ready to make an impact, from the #1 school of public health.

Master of Health Science (MHS)

Onsite | Full-Time | 2 years

The MHS is designed for students who are new to the field and for those who want to gain the quantitative skills necessary to conduct research.

Master of Science (ScM)

Onsite | Full-Time | 2 years

Many students pursuing the ScM find themselves conducting a "mini doctoral dissertation" in terms of breadth and scope of their research.

Doctor of Philosophy (PhD)

Onsite | Full-Time | 4 years - 5 years

Training is offered through a core methodologic sequence with the addition of more focused courses in specialized areas. Most training areas of concentration require specific courses. Students are expected to tailor their curricula, working with their advisers to create a comprehensive plan of study and research.

Bachelor's / Master of Health Science (MHS)

Onsite | Full-Time | 6 years

The Bachelor's/Master of Health Science MHS combined degree program prepares students for further graduate work or prominent careers in research and science. It is an opportunity for undergraduate students at Johns Hopkins University who are majoring in Public Health Studies.

Epidemiology Faculty Spotlight

Tanjala Purnell, PhD '12,

uses epidemiology and health services research to advance equity in transplantation and related conditions, including kidney diseases, hypertension, and diabetes.

Tanjala S. Purnell stands on the steps with her back to a column, wearing a purple cardigan, black pants and shoes

Support Our Department

A gift to our department can help to provide student scholarships and internships, attract and retain faculty, and support innovation.