John Hopkins University

What you'll study

The programme centres on original, hypothesis-driven laboratory research combined with a structured curriculum that builds advanced knowledge in microbiology, immunology and molecular biology. Early years typically include laboratory rotations to identify a dissertation laboratory, core coursework in cellular and molecular immunology, microbial physiology and genetics, and quantitative methods such as biostatistics and bioinformatics.

• Core topics: adaptive and innate immunity, host–pathogen interactions, microbial pathogenesis, vaccine science, microbial genomics and molecular genetics.
• Techniques and methods: flow cytometry, high-dimensional immune profiling, next-generation sequencing, CRISPR and genetic manipulation of microbes, advanced microscopy and proteomics.
• Professional skills: scientific communication, grant writing, teaching practicum, ethics in research and laboratory management.

Students take seminars and journal clubs, present progress at departmental meetings, and complete qualifying examinations before advancing to dissertation research. The doctoral research culminates in a written dissertation and an oral defence based on original contributions to the field.

Entry requirements

Applicants are expected to hold a strong undergraduate degree (or equivalent) in a biological science, molecular biology, biochemistry, immunology or a closely related discipline. A master’s degree with research experience is advantageous but not always mandatory if the undergraduate preparation and research record are strong.

• Academic preparation: courses in cell biology, genetics, biochemistry and statistics are highly recommended.
• Research experience: prior laboratory research, demonstrated by publications, conference presentations or detailed descriptions in the statement of purpose, is important.
• Application materials: a statement of purpose outlining research interests, a curriculum vitae, official transcripts, and letters of recommendation from academic or research supervisors. Evidence of proficiency in English (where applicable) is required for non-native speakers.
• Other considerations: admission committees evaluate fit with faculty research programmes and the potential for independent research; some applicants may be invited for interviews with prospective advisers.

Career prospects

Graduates of the PhD programme pursue a range of careers in academia, industry and the public sector. Many continue with postdoctoral training and become principal investigators or faculty members leading independent laboratories.

• Academic research: university faculty and research scientists conducting basic and translational studies in immunology and microbiology.
• Biotech and pharmaceutical industry: roles in vaccine development, infectious disease therapeutics, diagnostics, translational research and clinical research organisations.
• Public health and government: research positions in public health agencies, policy roles, epidemiology and outbreak response.
• Other careers: scientific leadership in startups, regulatory affairs, science communication, intellectual property and consulting.

Why study at John Hopkins University

Johns Hopkins provides a highly collaborative research environment with strong links between the School of Medicine, the Bloomberg School of Public Health and internationally recognised basic science departments. Students benefit from access to core facilities, state-of-the-art instrumentation and interdisciplinary centres focused on infectious disease, immunobiology and vaccinology.

• Established faculty: opportunities to work with leading investigators across diverse areas of microbiology and immunology.
• Collaborative environment: interdisciplinary projects that bridge basic science, clinical research and public health practice.
• Training and resources: extensive seminar series, advanced technical platforms and professional development programmes to support research independence and career planning.

Together, these attributes create an environment well suited to students aiming to make substantive research contributions to our understanding and control of infectious and immune-mediated diseases.