As a PhD student and PhD graduate, Marietta Squire works and collaborates with the Department of Civil and Systems Engineering (CaSE) at Johns Hopkins University as well as the Center for Systems Science and Engineering (CSSE). She applies systems dynamics and mathematical optimization techniques to assess how to allocate budgets and various resources in a healthcare setting. She also applies mathematical modeling to assess how to bolster patient safety in healthcare. This is applied in order to minimize the transmission of healthcare-associated infections (HAIs) within a hospital setting.
She also works with Epidemiology and Infection Control and Prevention teams to quantify the risk of secondary infections at the hospital unit level. This risk quantification can then be used by Infectious Prevention teams in hospitals to inform and serve as a decision support tool to assist in the allocation of infection prevention resources. She also works for the Military Health System managing healthcare facility development projects.