LAUSR

Objectives Health disparities are associated with poor outcomes related to public health. The objective of this study was to assess health disparities associated with influenza infection based on median household income and educational attainment. Methods We geocoded people with documented confirmed influenza infection by home address to identify the US Census 2010 tract in which they lived during 4 influenza surveillance seasons (2013-2014, 2015-2016, 2016-2017, and 2017-2018) in Rhode Island. We dichotomized influenza as severe if the person with influenza infection was hospitalized (ie, inpatient) or as nonsevere if the person was not hospitalized (ie, outpatient). We examined 2 socioeconomic factors: median household income (defined as low, medium low, medium high, and high) and educational attainment (defined as a ratio among people who completed