Dr Kristen Earle is a Senior Program Officer across the Clinical and CMC domains of the Vaccine Development team at the Gates Foundation. Within the Clinical domain, her portfolio focuses on identifying correlates of protection to enable more efficient development of novel vaccines, and schedule optimization work that seeks to understand whether modifying immunization schedules could increase coverage and effectiveness of existing vaccines. In CMC, her portfolio includes investments in novel vaccine delivery technologies, including microneedle array patches.