JHSPH researchers conduct field trials to assess vaccine efficacy and effectiveness at diverse settings around the world. These studies involve large field sites, often enrolling thousands of participants and are typically designed to assess a range of health outcomes. Support for these large studies comes from a variety of sources including the WHO, the Bill & Melinda Gates Foundation, PATH, CDC, National Institutes of Health and the pharmaceutical industry. In addition to assessing the direct benefits of vaccination, some field trial designs allow investigators to measure indirect effects, such as the impact of vaccination on disease prevalence among unimmunized community members, cost-effectiveness, long-term impact of vaccines in routine use settings and to gain new insights into host-pathogen interaction.
Neal Halsey
Laura Hammitt
Lee Harrison
Ruth Karron
William Moss
Lawrence Moulton
Katherine O’Brien
David Sack
Mathuram Santosham
Center for American Indian Health The International Vaccine Access Center Visit Preclinical Vaccine Development, Phase I/II Clinical Vaccine Trials, Vaccine Finance, Implementation and Access, Vaccine Safety or Vaccine Ethics to learn about additional vaccine-related research activities. If you are a JHSPH faculty member, and would like to be affiliated with the JHVI, please email jhvi@jhsph.edu with a list of keywords and indicate which category or categories best describe your vaccine-related work. | 
