The Biomedical Advanced Research and Development Authority (BARDA) supports the development of medical countermeasures (MCMs)—technologies and products to prevent, prepare for, and respond to health security threats including chemical, biological, radiological, and nuclear (CBRN) threats, pandemic influenza, and emerging infectious diseases. Classes of technologies and products to counter such health security threats include vaccines, therapeutics, diagnostics, devices, digital health tools, and enabling technologies. Developing and ensuring access to medical countermeasures for pediatric populations is a part of BARDA’s Mission and Strategic Plan to protect all members of our communities against an evolving threat landscape and to ensure that BARDA’s response accounts for all needs of all segments of the population.