- 2006-2007: 32
- 2007-2008: 81
- 2008-2009: 47
- 2009-2010: 115
- 2010-2011: 77
- 2011-2012: 38
- 2012-2013: 147
- 2013-2014: 141
- 2014-2015: 223
- 2015-2016: 151
Source: AHRQ Healthcare Cost and Utilization Project
Statistical Brief #253, Inpatient Hospital Stays and Emergency Department Visits Involving Influenza, 2006-2016