The Center for Communicable Disease Dynamics (CCDD) at the Harvard T.H. Chan School of Public Health invites creative and motivated researchers to apply for at least four post-doctoral fellowship positions to work with our faculty on projects that focus on the study of pandemic response and dynamics. Multiple positions are available across a range of different projects. These projects include ones focusing on quantitative methods to assess the immunological determinants of continued transmission with successive variants; the use of wastewater data to inform situational awareness; modeling evolution of vaccine escape and evasion; examining within-host evolution and dynamics and relating them to population-level epidemiology, evolution, and emergence; assessment of drivers of inequity in surveillance, modeling, and disease burden with a focus on identifying gaps and how to address them.