Welcome! The faculty of the Department of Microbiology and Immunology are pleased that  you have an interest in our Doctoral Program. The Doctoral Program in the Department of Microbiology and Immunology is designed to educate students in the art and science of biomedical research, and to give him/her the experience and training needed to become an independent scientist. Our Ph.D. program offers state-of-the-art training in microbiology, immunology, virology, molecular biology, cancer research, pathogenesis of infectious diseases, and related disciplines. Students that graduate from our Program receive excellent preparation for a future in biomedical research.  Our students have gone on to successful postdoctoral research positions and careers, including in academic faculty positions, research and management in biotech and pharmaceutical industries, science writing, forensics, and government laboratories. Former Students


Admission Requirements

Students who wish to enter the graduate program in the Department of Microbiology and Immunology are expected to meet the following admission requirements:

  • Baccalaureate degree from a college or university approved by a regional accrediting agency.  Students must be available to start when coursework and introduction to faculty research beginning on July 25th.
  • An undergraduate grade point average of 3.0 (on a 4.0 point scale), and a 3.0 grade point average for any graduate coursework.
  • Completion of both the VERBAL and QUANTITATIVE sections of the Graduate Record Examination with a competitive score (typically composite of >295).

The above are minimal requirements, and the Department usually accepts only students whose achievements exceed these minimal requirements.

Application Details

An application for admission, evaluation forms, and a bound copy of the Departmental information manual may be obtained by clicking here or on the links below. The application deadline each year is January 31 or until we exhaust our funds for stipends and tuition waivers. The following information MUST be on file for consideration for admission into the Ph.D. program:

  1. Application for admission: PDF or Word document - Please fill out and send as an email attachment to the .
  2. An OFFICIAL transcript from all colleges and universities attended;
  3. At least three Evaluation Forms mailed or emailed directly to the Department by faculty members who know the applicant well enough to judge his/her potential as a graduate student;
  4. OFFICIAL scores of the Graduate Record Examination (GRE);
  5. OFFICIAL score of the TOEFL examination, foreign students only (TOEFL).

All applications, evaluation forms, and transcripts should be addressed to:

Dr. Dennis J. O'Callaghan, Boyd Professor and Head
Department of Microbiology and Immunology
Louisiana State University Health Sciences Center
1501 Kings Highway
Shreveport, LA 71130-3932
Telephone: (318) 675-5750
FAX: (318) 675-5764


Students who have provided a completed application packet are considered for a Travel Grant to pay all expenses for a required interview visit to the Department. Because of excessive cost, only students living in the USA are eligible for a Travel Award to interview. The Interview Visit is usually held on a Sunday and Monday and usually involves a group of six or more student applicants.

The purpose of the Interview Visit is to give the student a chance to learn about our Doctoral Program by meeting with the members of the Department faculty, our postdoctoral fellows, and all of our graduate students. Visiting students are given a presentation about all aspects of the Doctoral Program, the research activities of the faculty, an overview of the research resources of the Department and the LSUHSC Core Facility, and information about the many attractive features the Shreveport metropolitan area. Student visitors meet with faculty members in private interviews and have lots of opportunities to ask questions. A reception followed by dinner is held on the first night, and all transportation to/from the airport, hotel, LSUHSC, and the social event is provided. Our goal is for student visitors to learn about our Doctoral Program, our research programs, and the many attractive features of the Shreveport community in a relaxed and enjoyable environment.