EMNet consists of three main programs. The major research activities in each area are summarized below:

Multicenter Airway Research Collaboration (MARC): The two major research activities at this time are MARC-35 and MARC-43, two multicenter cohorts on infants. The cohorts will examine which children develop recurrent wheezing and asthma, and the relation of airway microbiome to risk of childhood asthma.

Health Services Research (HSR): Major research activities include: a) the National ED Safety Study (NEDSS), a >60-center study of patient safety issues in the ED; b) the ongoing National ED Inventories (NEDI), which includes a database of every ED in the United States and several international cities and countries (unfunded); and c) several EM workforce studies.

Social Emergency Medicine (Social EM): Current research activities focus on identifying and addressing adverse social determinants of health and developing interventions to reduce disparities in emergency care.

Large administrative dataset analyses contribute to all three programs.