The School Immunization Survey collects aggregate data from schools in New York State regarding the immunization status of all students attending school. All schools, excluding New York City public schools, have reported the immunization status of all students in grades kindergarten through 12.

This dataset includes weekly aggregate counts of persons hospitalized with laboratory-confirmed influenza (flu), by county beginning with the 2020-21 season. The primary goal of this dataset is to provide users timely information about influenza-associated hospitalizations throughout the current influenza season. Although each influenza season is unique, historical data is provided for trend comparison.