Clayton D. Harro, M.D., Sc.M.


Co-PI, Project 4


Assistant Scientist,

Bloomberg School of Public Health




Departmental Affiliation


International Health

Disease Prevention and Control

Center and Institute Affiliations

Center for Immunization Research



Departmental Address


School of Public Health HH 117






Is board certified in Internal Medicine, and received his Master of Science degree in Vaccine Development, Evaluation, and Policy at the Johns Hopkins University School of Hygiene and Public Health in 1996. His Masters thesis focused on DNA vaccines and included a protocol design for an outpatient vaccination/inpatient challenge study of an investigational DNA influenza vaccine.

Since joining the Johns Hopkins University Center for Immunization Research (CIR) in 1996, Dr. Harro has been principal investigator (PI) on industry-sponsored studies of preventive HIV vaccines, DNA influenza vaccines, hepatitis B vaccines with MF59, and hepatitis B vaccines with GM-CSF. He has also served as medical director of the Johns Hopkins AIDS Vaccine Evaluation Unit. In this capacity, he has been the site PI on all preventive AIDS vaccine studies at the CIR and has actively participated in the design, conduct, and medical oversight of phase I, II, and III trials of recombinant subunit vaccines, and phase I/II trials of vector-based vaccines using vaccinia, canarypox, and attenuated S. typhi. In addition, Dr. Harro has collaborated with the National Cancer Institute (NCI) to develop a vaccine to prevent cervical cancer. He designed and was PI on the first-ever phase I and phase II vaccine trials for human papillomavirus (HPV) type 16 virus-like particle (VLP) vaccines.




International Health, preventive HIV vaccines, HPV human papillomavirus vaccines, hepatitis B vaccines







Project 4





Clayton Harro

Richard Roden

Drew Pardoll

Jonathan Schneck




Rongcun Yang

Julie McArthur

Sharonda Boardley

Sabrina Weaver






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