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W. Harry Feinstone Department of Molecular Microbiology and Immunology

Master of Health Science (MHS)

The Master of Health Science Program (MHS) is designed to meet the needs of students who require graduate-level preparation for careers in medicine, research and public health. MMI MHS students go on to medical school, to achieve advanced graduate education, and to take on positions in public health and industry. The MHS program is completed in one academic year. The program includes a core curriculum that focuses on the biology, immunology, clinical outcomes and epidemiology of major infectious diseases of public health importance. MMI MHS students typically take four or five courses per eight-week term, which provide ample opportunities for students to customize their curriculum according to their area of interest by taking advantage of course offerings at the Johns Hopkins Bloomberg School of Public Health, the School of Medicine and the Carey Business School.  Students have extensive opportunities to interact one-on-one with the core MMI faculty and staff for mentoring, advising, thesis preparation and career development.  For those students who declare an interest in careers in medicine and/or public health, advising and workshops are available. Other valuable resources include the JHSPH Career Services Office and the Student Outreach Resource Center (SOURCE).

For more detailed information about the MHS degree, please consult the Johns Hopkins e-catalogue.

Students in the MHS program have the option to transfer to the ScM program if they decide to pursue a Master’s degree that includes original laboratory or field research (see below).

MMI, in collaboration with the JHU Carey Business School, offers a special opportunity for students who may seek to apply their knowledge in infectious diseases to the biotechnology sphere. This option provides instruction focused on developing an understanding of both microeconomic theory and the processes involved in moving innovative technology from the bench to commercial application.  This opportunity is designed to provide students with tools that can be applied to work in the biotechnology industry, the pharmaceutical industry, or healthcare-focused venture capital. If you are interested in knowing more details about this innovative, biotech-focused learning opportunity, contact Gail O’Connor (see below).

Required Schoolwide Courses:

Required Department Courses

Select two of four core MMI courses:

Select one of the following literature courses:

The remaining credits are flexible and may be individualized based on the student’s interests and career aspirations. Students may take courses offered in MMI or in other departments within and outside of the School.

Examples of elective courses taken by MHS students include:

MHS Thesis

The degree requirements specify that all MHS students submit a thesis. The student will select the thesis topic in consultation with his/her academic advisor. The thesis consists of a scholarly treatment of a topic that is important to public health. Through formal and informal interactions with their advisors and other MMI faculty, each student will be guided through the process of selecting a topic, exploring the literature, organizing and writing the thesis and the scholarly presentation of the findings.  

Our MHS Graduates 

Previous graduates of the MMI masters' programs have gone on to pursue PhD or MD degrees at institutions including Johns Hopkins Bloomberg School of Public Health, Johns Hopkins School of Medicine, Harvard School of Public Health, Yale School of Medicine, Drexel University, Stanford University, Penn State University, Baylor College of Medicine, and the University of California system.

Our masters' program graduates have also successfully competed for research positions at the National Institutes of Health (NIH), Federal Drug Administration (FDA), various military research facilities, non-profit organizations and leading biotechnology companies.

How to Apply

MHS Application Deadline is June 1.

Prospective students should submit the School's online application, which requires the following documents:

Visit the Admissions Office to learn about the online application process.

At the end of the second term of the first year, MHS students who wish to gain research experience at the bench or in the field may apply for transfer to the Department's Master of Science Program. NOTE: Applicants who are certain that they want to pursue a research-based degree that involves conducting original research should apply directly to the ScM Program.

Applications are reviewed on a rolling basis.  Early application submission is recommended.

Application Fee Waivers 

Application fee waivers are available for applicants to MMI graduate programs who are U.S. Citizens or Permanent Residents of the U.S. and meet additional eligibility criteria. Prospective students that do not meet eligibility criteria in these categories may request an application fee waiver with justification. Applicants may  request a fee waiver by emailing Alan Scott, PhD at with subject line “SOPHAS Fee  Waiver for MMI” to request a waiver.  Waivers must be requested by November 16, 2020, for applications to the doctoral program and by May 1, 2021, for master's degree programs. 
Please note: fee waivers must be issued before submitting your application. We cannot issue reimbursements for the application fee.  

Click here for eligibility requirements.

For more information, please contact:

Ms. Gail O'Connor
Academic Program Administrator
Department of Molecular Microbiology and Immunology
Johns Hopkins Bloomberg School of Public Health
615 North Wolfe Street, Room E5008
Baltimore, Maryland 21205
Phone: (410) 614-4232
Fax: (410) 955-0105