Total emergency department visits, and visits and admissions for influenza-like and/or pneumonia illness by modified ZIP code tabulation area of patient residence.

This dataset is a summary of the emergency department (ED) encounters reported in SPARCS data, summarized by facility and quarter of visit. ED encounters are classified according to the claim type associated with the SPARCS record into treat and release ED visits, ED visits that required ambulatory surgery, and ED visits that resulted in an inpatient admission.