Past Weekly Surveillance Reports
Updated March 17, 2023
Information about the 2009 H1N1 pandemic is archived and available at https://www.cdc.gov/h1n1flu/.
- Current Weekly Influenza Report
- March 4, 2023—Week 9
- February 25, 2023—Week 8
- February 18, 2023—Week 7
- February 11, 2023—Week 6
- February 4, 2023—Week 5
- January 28, 2023—Week 4
- January 21, 2023—Week 3
- January 14, 2023—Week 2
- January 7, 2023—Week 1
- December 31, 2022—Week 52
- December 24, 2022—Week 51
- December 17, 2022—Week 50
- December 10, 2022—Week 49
- December 3, 2022—Week 48
- November 26, 2022—Week 47
- November 19, 2022—Week 46
- November 12, 2022—Week 45
- November 5, 2022—Week 44
- October 29, 2022—Week 43
- October 22, 2022—Week 42
- October 15, 2022—Week 41
- October 8, 2022—Week 40
- Current Weekly Influenza Report
- October 1, 2022—Week 39
- September 24, 2022—Week 38
- September 17, 2022—Week 37
- September 10, 2022—Week 36
- September 3, 2022—Week 35
- August 27, 2022—Week 34
- August 20, 2022—Week 33
- August 13, 2022—Week 32
- August 6, 2022—Week 31
- July 30, 2022—Week 30
- July 23, 2022—Week 29
- July 16, 2022—Week 28
- July 9, 2022—Week 27
- July 2, 2022—Week 26
- June 25, 2022—Week 25
- June 18, 2022—Week 24
- June 11, 2022—Week 23
- June 4, 2022—Week 22
- May 28, 2022—Week 21
- May 21, 2022—Week 20
- May 14, 2022—Week 19
- May 7, 2022—Week 18
- April 30, 2022—Week 17
- April 23, 2022—Week 16
- April 16, 2022—Week 15
- April 9, 2022—Week 14
- April 2, 2022—Week 13
- March 26, 2022—Week 12
- March 19, 2022—Week 11
- March 12, 2022—Week 10
- March 5, 2022—Week 09
- February 26, 2022—Week 08
- February 19, 2022—Week 07
- February 12, 2022—Week 06
- February 5, 2022—Week 05
- January 29, 2022—Week 04
- January 22, 2022—Week 03
- January 15, 2022—Week 02
- January 8, 2022—Week 01
- January 1, 2022—Week 52
- December 25, 2021—Week 51
- December 18, 2021—Week 50
- December 11, 2021—Week 49
- December 4, 2021—Week 48
- November 27, 2021—Week 47
- November 20, 2021—Week 46
- November 13, 2021—Week 45
- November 6, 2021—Week 44
- October 30, 2021—Week 43
- October 23, 2021—Week 42
- October 16, 2021—Week 41
- October 9, 2021—Week 40
- Current Weekly Influenza Report
- October 2, 2021—Week 39
- September 25, 2021—Week 38
- September 18, 2021—Week 37
- September 11, 2021—Week 36
- September 4, 2021—Week 35
- August 28, 2021—Week 34
- August 21, 2021—Week 33
- August 14, 2021—Week 32
- August 7, 2021—Week 31
- July 31, 2021—Week 30
- July 24, 2021—Week 29
- July 17, 2021—Week 28
- July 9, 2021—Week 27
- July 2, 2021—Week 26
- June 26, 2021—Week 25
- June 19, 2021—Week 24
- June 12, 2021—Week 23
- June 5, 2021—Week 22
- May 29, 2021—Week 21
- May 22, 2021—Week 20
- May 15, 2021—Week 19
- May 8, 2021—Week 18
- May 1, 2021—Week 17
- April 24, 2021—Week 16
- April 17, 2021—Week 15
- April 10, 2021—Week 14
- April 3, 2021—Week 13
- March 27, 2021—Week 12
- March 20, 2021—Week 11
- March 13, 2021—Week 10
- March 6, 2021—Week 9
- February 27, 2021—Week 8
- February 20, 2021—Week 7
- February 13, 2021—Week 6
- February 6, 2021—Week 5
- January 30, 2021—Week 4
- January 23, 2021—Week 3
- January 16, 2021—Week 2
- January 9, 2021—Week 1
- January 2, 2021—Week 53
- December 26, 2020—Week 52
- December 19, 2020—Week 51
- December 12, 2020—Week 50
- December 5, 2020—Week 49
- November 28, 2020—Week 48
- November 21, 2020—Week 47
- November 14, 2020—Week 46
- November 7, 2020—Week 45
- October 31, 2020—Week 44
- October 24, 2020—Week 43
- October 17, 2020—Week 42
- October 10, 2020—Week 41
- October 3, 2020—Week 40
- Current Weekly Influenza Report
- September 26, 2020—Week 39
- September 19, 2020—Week 38
- September 12, 2020—Week 37
- September 5, 2020—Week 36
- August 29, 2020—Week 35
- August 22, 2020—Week 34
- August 15, 2020—Week 33
- August 8, 2020—Week 32
- August 1, 2020—Week 31
- July 25, 2020—Week 30
- July 18, 2020—Week 29
- July 11, 2020—Week 28
- July 4, 2020—Week 27
- June 27, 2020—Week 26
- June 20, 2020—Week 25
- June 13, 2020—Week 24
- June 6, 2020—Week 23
- May 30, 2020—Week 22
- May 23, 2020—Week 21
- May 16, 2020—Week 20
- May 9, 2020—Week 19
- May 2, 2020—Week 18
- April 25, 2020—Week 17
- April 18, 2020—Week 16
- April 11, 2020—Week 15
- April 4, 2020—Week 14
- March 28, 2020—Week 13
- March 21, 2020—Week 12
- March 14, 2020—Week 11
- March 7, 2020—Week 10
- February 29, 2020—Week 9
- February 22, 2020—Week 8
- February 15, 2020—Week 7
- February 8, 2020—Week 6
- February 1, 2020—Week 5
- January 25, 2020—Week 4
- January 18, 2020—Week 3
- January 11, 2020—Week 2
- January 4, 2020—Week 1
- December 28, 2019—Week 52
- December 21, 2019—Week 51
- December 14, 2019—Week 50
- December 7, 2019—Week 49
- November 30, 2019—Week 48
- November 23, 2019—Week 47
- November 16, 2019—Week 46
- November 9, 2019—Week 45
- November 2, 2019—Week 44
- October 26, 2019—Week 43
- October 19, 2019—Week 42
- October 12, 2019—Week 41
- October 5, 2019—Week 40
- September 28, 2019—Week 39
- September 21, 2019—Week 38
- September 14, 2019—Week 37
- September 7, 2019—Week 36
- August 31, 2019—Week 35
- August 24, 2019—Week 34
- August 17, 2019—Week 33
- August 10, 2019—Week 32
- August 3, 2019—Week 31
- July 27, 2019—Week 30
- July 20, 2019—Week 29
- July 13, 2019—Week 28
- July 6, 2019—Week 27
- June 29, 2019—Week 26
- June 22, 2019—Week 25
- June 15, 2019—Week 24
- June 8, 2019—Week 23
- June 1, 2019—Week 22
- May 25, 2019—Week 21
- May 18, 2019—Week 20
- May 11, 2019—Week 19
- May 4, 2019—Week 18
- April 27, 2019—Week 17
- April 20, 2019—Week 16
- April 13, 2019—Week 15
- April 6, 2019—Week 14
- March 30, 2019—Week 13
- March 23, 2019—Week 12
- March 16, 2019—Week 11
- March 9, 2019—Week 10
- March 2, 2019—Week 9
- February 23, 2019—Week 8
- February 16, 2019—Week 7
- February 9, 2019—Week 6
- February 2, 2019—Week 5
- January 26, 2019—Week 4
- January 19, 2019—Week 3
- January 12, 2019—Week 2
- January 5, 2019—Week 1
- December 29, 2018—Week 52
- December 22, 2018—Week 51
- December 15, 2018—Week 50
- December 8, 2018—Week 49
- December 1, 2018—Week 48
- November 24, 2018—Week 47
- November 17, 2018—Week 46
- November 10, 2018—Week 45
- November 3, 2018—Week 44
- October 27, 2018—Week 43
- October 20, 2018—Week 42
- October 13, 2018—Week 41
- October 6, 2018—Week 40
- September 29, 2018—Week 39
- September 22, 2018—Week 38
- September 15, 2018—Week 37
- September 8, 2018—Week 36
- September 1, 2018—Week 35
- August 25, 2018—Week 34
- August 18, 2018—Week 33
- August 11, 2018—Week 32
- August 4, 2018—Week 31
- July 28, 2018—Week 30
- July 21, 2018—Week 29
- July 14, 2018—Week 28
- July 7, 2018—Week 27
- June 30, 2018—Week 26
- June 23, 2018—Week 25
- June 16, 2018—Week 24
- June 9, 2018—Week 23
- June 2, 2018—Week 22
- May 26, 2018—Week 21
- May 19, 2018—Week 20
- May 12, 2018—Week 19
- May 5, 2018—Week 18
- April 28, 2018—Week 17
- April 21, 2018—Week 16
- April 14, 2018—Week 15
- April 7, 2018—Week 14
- March 31, 2018—Week 13
- March 24, 2018—Week 12
- March 17, 2018—Week 11
- March 10, 2018—Week 10
- March 3, 2018—Week 09
- February 24, 2018—Week 08
- February 17, 2018—Week 07
- February 10, 2018—Week 06
- February 3, 2018—Week 05
- January 27, 2018—Week 04
- January 20, 2018—Week 03
- January 13, 2018—Week 02
- January 6, 2018—Week 01
- December 30, 2017—Week 52
- December 23, 2017—Week 51
- December 16, 2017—Week 50
- December 9, 2017—Week 49
- December 2, 2017—Week 48
- November 25, 2017—Week 47
- November 18, 2017—Week 46
- November 18, 2017—Week 46
- November 11, 2017—Week 45
- November 4, 2017—Week 44
- October 28, 2017—Week 43
- October 21, 2017—Week 42
- October 14, 2017—Week 41
- October 7, 2017—Week 40
- September 30, 2017—Week 39
- September 23, 2017—Week 38
- September 16, 2017—Week 37
- September 9, 2017—Week 36
- September 2, 2017—Week 35
- August 26, 2017—Week 34
- August 19, 2017—Week 33
- August 12, 2017—Week 32
- August 5, 2017—Week 31
- July 29, 2017—Week 30
- July 23, 2017—Week 29
- July 16, 2017—Week 28
- July 8, 2017—Week 27
- July 1, 2017—Week 26
- June 24, 2017—Week 25
- June 17, 2017—Week 24
- June 10, 2017—Week 23
- June 3, 2017—Week 22
- May 27, 2017—Week 21
- May 20, 2017—Week 20
- May 13, 2017—Week 19
- May 6, 2017—Week 18
- April 29, 2017—Week 17
- April 22, 2017—Week 16
- April 15, 2017—Week 15
- April 8, 2017—Week 14
- April 1, 2017—Week 13
- March 25, 2017—Week 12
- March 18, 2017—Week 11
- March 11, 2017—Week 10
- March 4, 2017—Week 09
- Feb 25, 2017—Week 08
- Feb 18, 2017—Week 07
- Feb 11, 2017—Week 06
- Feb 4, 2017—Week 05
- Jan 28, 2017—Week 04
- Jan 21, 2017—Week 03
- Jan 14, 2017—Week 02
- Jan 7, 2017—Week 01
- Dec 31, 2016—Week 52
- Dec 24, 2016—Week 51
- Dec 17, 2016—Week 50
- Dec 10, 2016—Week 49
- Dec 3, 2016—Week 48
- Nov 26, 2016—Week 47
- Nov 19, 2016—Week 46
- Nov 12, 2016—Week 45
- Nov 5, 2016—Week 44
- Oct 29, 2016—Week 43
- Oct 22, 2016—Week 42
- Oct 15, 2016—Week 41
- Oct 8, 2016—Week 40
- Oct 1, 2016—Week 39
- Sep 24, 2016—Week 38
- Sep 17, 2016—Week 37
- Sep 10, 2016—Week 36
- Sep 3, 2016—Week 35
- Aug 27, 2016—Week 34
- Aug 27, 2016—Week 33
- Aug 13, 2016—Week 32
- Aug 6, 2016—Week 31
- Jul 30, 2016—Week 30
- Jul 23, 2016—Week 29
- Jul 16, 2016—Week 28
- Jul 9, 2016—Week 27
- Jul 2, 2016—Week 26
- Jun 25, 2016—Week 25
- Jun 18, 2016—Week 24
- Jun 11, 2016—Week 23
- Jun 4, 2016—Week 22
- May 28, 2016—Week 21
- May 21, 2016—Week 20
- May 14, 2016—Week 19
- May 7, 2016—Week 18
- Apr 30, 2016—Week 17
- Apr 23, 2016—Week 16
- Apr 16, 2016—Week 15
- Apr 9, 2016—Week 14
- Apr 2, 2016—Week 13
- Mar 26, 2016—Week 12
- Mar 19, 2016—Week 11
- Mar 12, 2016—Week 10
- Mar 5, 2016—Week 9
- Feb 27, 2016—Week 8
- Feb 20, 2016—Week 7
- Feb 13, 2016—Week 6
- Feb 6, 2016—Week 5
- Jan 30, 2016—Week 4
- Jan 23, 2016—Week 3
- Jan 16, 2016—Week 2
- Jan 9, 2016—Week 1
- Jan 2, 2016—Week 52
- Dec 26, 2015—Week 51
- Dec 19, 2015—Week 50
- Dec 12, 2015—Week 49
- Dec 5, 2015—Week 48
- Nov 28, 2015—Week 47
- Nov 21, 2015—Week 46
- Nov 14, 2015—Week 45
- Nov 7, 2015—Week 44
- Oct 31, 2015—Week 43
- Oct 24, 2015—Week 42
- Oct 17, 2015—Week 41
- Oct 10, 2015—Week 40
- Oct 3, 2015—Week 39
- Sep 26, 2015—Week 38
- Sep 19, 2015—Week 37
- Sep 12, 2015—Week 36
- Sep 5, 2015—Week 35
- Aug 29, 2015—Week 34
- Aug 22, 2015—Week 33
- Aug 15, 2015—Week 32
- Aug 8, 2015—Week 31
- Aug 1, 2015—Week 30
- Jul 25, 2015—Week 29
- Jul 18, 2015—Week 28
- Jul 11, 2015—Week 27
- Jul 4, 2015—Week 26
- Jun 27, 2015—Week 25
- Jun 20, 2015—Week 24
- Jun 13, 2015—Week 23
- Jun 6, 2015—Week 22
- May 30, 2015—Week 21
- May 23, 2015—Week 20
- May 16, 2015—Week 19
- May 9, 2015—Week 18
- May 2, 2015—Week 17
- Apr 25, 2015—Week 16
- Apr 18, 2015—Week 15
- Apr 11, 2015—Week 14
- Apr 4, 2015—Week 13
- Mar 28, 2015—Week 12
- Mar 21, 2015—Week 11
- Mar 14, 2015—Week 10
- Mar 7, 2015—Week 9
- Feb 28, 2015—Week 8
- Feb 21, 2015—Week 7
- Feb 14, 2015—Week 6
- Feb 7, 2015—Week 5
- Jan 31, 2015—Week 4
- Jan 24, 2015—Week 3
- Jan 17, 2015—Week 2
- Jan 10, 2015—Week 1
- Jan 3, 2015—Week 53
- Dec 27, 2014—Week 52
- Dec 20, 2014—Week 51
- Dec 13, 2014—Week 50
- Dec 6, 2014—Week 49
- Nov 29, 2014—Week 48
- Nov 22, 2014—Week 47
- Nov 15, 2014—Week 46
- Nov 8, 2014—Week 45
- Nov 1, 2014—Week 44
- Oct 25, 2014—Week 43
- Oct 18, 2014—Week 42
- Oct 11, 2014—Week 41
- Oct 4, 2014—Week 40
- Sep 27, 2014—Week 39
- Sep 20, 2014—Week 38
- Sep 13, 2014—Week 37
- Sep 6, 2014—Week 36
- Aug 30, 2014—Week 35
- Aug 23, 2014—Week 34
- Aug 16, 2014—Week 33
- Aug 9, 2014—Week 32
- Aug 2, 2014—Week 31
- Jul 26, 2014—Week 30
- Jul 19, 2014—Week 29
- Jul 12, 2014—Week 28
- Jul 5, 2014—Week 27
- Jun 28, 2014—Week 26
- Jun 21, 2014—Week 25
- Jun 14, 2014—Week 24
- Jun 7, 2014—Week 23
- May 31, 2014—Week 22
- May 24, 2014—Week 21
- May 17, 2014—Week 20
- May 10, 2014—Week 19
- May 3, 2014—Week 18
- Apr 26, 2014—Week 17
- Apr 19, 2014—Week 16
- Apr 12, 2014—Week 15
- Apr 5, 2014—Week 14
- Mar 29, 2014—Week 13
- Mar 22, 2014—Week 12
- Mar 15, 2014—Week 11
- Mar 8, 2014—Week 10
- Mar 1, 2014—Week 9
- Feb 22, 2014—Week 8
- Feb 15, 2014—Week 7
- Feb 8, 2014—Week 6
- Feb 1, 2014—Week 5
- Jan 25, 2014—Week 4
- Jan 18, 2014—Week 3
- Jan 11, 2014—Week 2
- Jan 4, 2014—Week 1
- Dec 28, 2013—Week 52
- Dec 21, 2013—Week 51
- Dec 14, 2013—Week 50
- Dec 7, 2013—Week 49
- Nov 30, 2013—Week 48
- Nov 23, 2013—Week 47
- Nov 16, 2013—Week 46
- Nov 9, 2013—Week 45
- Nov 2, 2013—Week 44
- Oct 26, 2013—Week 43
- Oct 19, 2013—Week 42
- Oct 12, 2013—Week 41
- Oct 5, 2013—Week 40pdf icon
- 2012-13 Influenza Season Summarypdf icon
- Sep 21, 2013—Week 38
- Sep 14, 2013—Week 37
- Sep 7, 2013—Week 36
- Aug 31, 2013—Week 35
- Aug 24, 2013—Week 34
- Aug 17, 2013—Week 33
- Aug 10, 2013—Week 32
- Aug 3, 2013—Week 31
- Jul 27, 2013—Week 30
- Jul 20, 2013—Week 29
- Jul 13, 2013—Week 28
- Jul 6, 2013—Week 27
- Jun 29, 2013—Week 26
- Jun 22, 2013—Week 25
- Jun 15, 2013—Week 24
- Jun 8, 2013—Week 23
- Jun 1, 2013—Week 22
- May 25, 2013—Week 21
- May 18, 2013—Week 20
- May 11, 2013—Week 19
- May 4, 2013—Week 18
- Apr 27, 2013—Week 17
- Apr 20, 2013—Week 16
- Apr 13, 2013—Week 15
- Apr 6, 2013—Week 14
- Mar 30, 2013—Week 13
- Mar 23, 2013—Week 12
- Mar 16, 2013—Week 11
- Mar 9, 2013—Week 10
- Mar 2, 2013—Week 9
- Feb 23, 2013—Week 8
- Feb 16, 2013—Week 7
- Feb 9, 2013—Week 6
- Feb 2, 2013—Week 5
- Jan 26, 2013—Week 4
- Jan 19, 2013—Week 3
- Jan 12, 2013—Week 2
- Jan 5, 2013—Week 1
- Dec 29, 2012—Week 52
- Dec 22, 2012—Week 51
- Dec 15, 2012—Week 50
- Dec 8, 2012—Week 49
- Dec 1, 2012—Week 48
- Nov 24, 2012—Week 47
- Nov 17, 2012—Week 46
- Nov 10, 2012—Week 45
- Nov 3, 2012—Week 44
- Oct 27, 2012—Week 43
- Oct 20, 2012—Week 42
- Oct 13, 2012—Week 41
- Oct 6, 2012—Week 40
- 2011-12 Influenza Season Summarypdf icon
- Sep 29, 2012—Week 39
- Sep 22, 2012—Week 38
- Sep 15, 2012—Week 37
- Sep 8, 2012—Week 36
- Sep 1, 2012—Week 35
- Aug 25, 2012—Week 34
- Aug 18, 2012—Week 33
- Aug 11, 2012—Week 32
- Aug 4, 2012—Week 31
- Jul 28, 2012—Week 30
- Jul 21, 2012—Week 29
- Jul 14, 2012—Week 28
- Jul 7, 2012—Week 27
- Jun 30, 2012—Week 26
- Jun 23, 2012—Week 25
- Jun 16, 2012—Week 24
- Jun 9, 2012—Week 23
- Jun 2, 2012—Week 22
- May 26, 2012—Week 21
- May 19, 2012—Week 20
- May 12, 2012—Week 19
- May 5, 2012—Week 18
- Apr 28, 2012—Week 17
- Apr 21, 2012—Week 16
- Apr 14, 2012—Week 15
- Apr 7, 2012—Week 14
- Mar 31, 2012—Week 13
- Mar 24, 2012—Week 12
- Mar 17, 2012—Week 11
- Mar 10, 2012—Week 10
- Mar 3, 2012—Week 9
- Feb 25, 2012—Week 8
- Feb 18, 2012—Week 7
- Feb 11, 2012—Week 6
- Feb 4, 2012—Week 5
- Jan 28, 2012—Week 4
- Jan 21, 2012—Week 3
- Jan 14, 2012—Week 2
- Jan 7, 2012—Week 1
- Dec 31, 2012—Week 52
- Dec 24, 2011—Week 51
- Dec 17, 2011—Week 50
- Dec 10, 2011—Week 49
- Dec 3, 2011—Week 48
- Nov 26, 2011—Week 47
- Nov 19, 2011—Week 46
- Nov 12, 2011—Week 45
- Nov 5, 2011—Week 44
- Oct 29, 2011—Week 43
- Oct 22, 2011—Week 42
- Oct 15, 2011—Week 41
- Oct 8, 2011—Week 40
- 2010-11 Influenza Season Summary
- Oct 1, 2011—Week 39
- Sept 24, 2011—Week 38
- Sept 17, 2011—Week 37
- Sept 10, 2011—Week 36
- Sept 3, 2011—Week 35
- Aug 27, 2011—Week 34
- Aug 20, 2011—Week 33
- Aug 13, 2011—Week 32
- Aug 6, 2011—Week 31
- July 30, 2011—Week 30
- July 23, 2011—Week 29
- July 16, 2011—Week 28
- July 9, 2011—Week 27
- July 2, 2011—Week 26
- June 25, 2011—Week 25
- June 18, 2011—Week 24
- June 11, 2011—Week 23
- June 4, 2011—Week 22
- May 28, 2011—Week 21
- May 21, 2011—Week 20
- May 14, 2011—Week 19
- May 7, 2011—Week 18
- Apr 30, 2011—Week 17
- Apr 23, 2011—Week 16
- Apr 16, 2011—Week 15
- Apr 9, 2011—Week 14
- Apr 2, 2011—Week 13
- Mar 26, 2011—Week 12
- Mar 19, 2011—Week 11
- Mar 12, 2011—Week 10
- Mar 5, 2011—Week 9
- Feb 26, 2011—Week 8
- Feb 19, 2011—Week 7
- Feb 26, 2011—Week 8
- Feb 19, 2011—Week 7
- Feb 12, 2011—Week 6
- Feb 5, 2011—Week 5
- Jan 29, 2011—Week 4
- Jan 22, 2011—Week 3
- Jan 15, 2011—Week 2
- Jan 8, 2011—Week 1
- Jan 1, 2011—Week 52
- Dec 24, 2010—Week 51
- Dec 18, 2010—Week 50
- Dec 11, 2010—Week 49
- Dec 4, 2010—Week 48
- Nov 27, 2010—Week 47
- Nov 20, 2010—Week 46
- Nov 13, 2010—Week 45
- Nov 6, 2010—Week 44
- Oct 30, 2010—Week 43
- Oct 23, 2010—Week 42
- Oct 16, 2010—Week 41
- Oct 9, 2010—Week 40
- 2009-10 Influenza Season Summary
- May 23, 2010—Week 20
- May 16, 2010—Week 19
- May 9, 2010—Week 18
- May 2, 2010—Week 17
- Apr 25, 2010—Week 16
- Apr 18, 2010—Week 15
- Apr 11, 2010—Week 14
- Apr 4, 2010—Week 13
- Mar 28, 2010—Week 12
- Mar 21, 2010—Week 11
- Mar 14, 2010—Week 10
- Mar 7, 2010—Week 09
- Feb 28, 2010—Week 08
- Feb 21, 2010—Week 07
- Feb 14, 2010—Week 06
- Feb 7, 2010—Week 05
- Jan 31, 2010—Week 04
- Jan 24, 2010—Week 03
- Jan 17, 2010—Week 02
- Jan 10, 2010—Week 01
- Jan 3, 2010—Week 52
- Dec 26, 2009—Week 51
- Dec 19, 2009—Week 50
- Dec 12, 2009—Week 49
- Dec 5, 2009—Week 48
- Nov 28, 2009—Week 47
- Nov 21, 2009—Week 46
- Nov 14, 2009—Week 45
- Nov 7, 2009—Week 44
- Oct 31, 2009—Week 43
- Oct 24, 2009—Week 42
- Oct 17, 2009—Week 41
- Oct 10, 2009—Week 40
- 2008-09 Influenza Season Summary
- Oct 3, 2009—Week 39
- Sep 26, 2009—Week 38
- Sep 19, 2009—Week 37
- Sep 12, 2009—Week 36
- Sep 5, 2009—Week 35
- Aug 29, 2009—Week 34
- Aug 22, 2009—Week 33
- Aug 15, 2009—Week 32
- Aug 8, 2009—Week 31
- Aug 1, 2009—Week 30
- Jul 25, 2009—Week 29
- Jul 18, 2009—Week 28
- Jul 11, 2009—Week 27
- Jul 4, 2009—Week 26
- Jun 27, 2009—Week 25
- Jun 20, 2009—Week 24
- Jun 13, 2009—Week 23
- Jun 6, 2009—Week 22
- May 30, 2009—Week 21
- May 23, 2009—Week 20
- May 16, 2009—Week 19
- May 9, 2009—Week 18
- May 2, 2009—Week 17
- April 18, 2009—Week 15
- April 11, 2009—Week 14
- April 4, 2009—Week 13
- March 28, 2009—Week 12
- March 21, 2009—Week 11
- March 14, 2009—Week 10
- March 7, 2009—Week 09
- February 28, 2009—Week 08
- February 21, 2009—Week 07
- February 14, 2009—Week 06
- February 7, 2009—Week 05
- January 31, 2009—Week 04
- January 17, 2009—Week 02
- January 10, 2009—Week 01
- January 3, 2009—Week 53
- December 27, 2008—Week 52
- December 20, 2008—Week 51
- December 13, 2008—Week 50
- December 6, 2008—Week 49
- November 29, 2008—Week 48
- November 22, 2008—Week 47
- November 15, 2008—Week 46
- November 8, 2008—Week 45
- November 1, 2008—Week 44
- October 25, 2008—Week 43
- October 18, 2008—Week 42
- October 11, 2008—Week 41
- October 4, 2008—Week 40
- 2007-08 Influenza Season Summary
- May 17, 2008—Week 20
- May 10, 2008—Week 19
- May 3, 2008—Week 18
- April 26, 2008—Week 17
- April 19, 2008—Week 16
- April 12, 2008—Week 15
- April 5, 2008—Week 14
- March 29, 2008—Week 13
- March 22, 2008—Week 12
- March 15, 2008—Week 11
- March 8, 2008—Week 10
- March 1, 2008—Week 9
- February 23, 2008—Week 8
- February 16, 2008—Week 7
- February 9, 2008—Week 6
- February 2, 2008—Week 5
- January 26, 2008—Week 4
- January 19, 2008—Week 3
- January 12, 2008—Week 2
- January 5, 2008—Week 1
- December 29, 2007—Week 52
- December 22, 2007—Week 51
- December 15, 2007—Week 50
- December 8, 2007—Week 49
- December 1, 2007—Week 48
- November 24, 2007—Week 47
- November 17, 2007—Week 46
- November 10, 2007—Week 45
- November 3, 2007—Week 44
- October 27, 2007—Week 43
- October 20, 2007—Week 42
- October 13, 2007—Week 41
- October 6, 2007—Week 40
- 2006-07 Influenza Season Summary
- May 19, 2007—Week 20
- May 12, 2007—Week 19
- May 5, 2007—Week 18
- April 28, 2007—Week 17
- April 21, 2007—Week 16
- April 14, 2007—Week 15
- April 7, 2007—Week 14
- March 31, 2007—Week 13
- March 24, 2007—Week 12
- March 17, 2007—Week 11
- March 10, 2007—Week 10
- March 3, 2007—Week 9
- February 24, 2007—Week 8
- February 17, 2007—Week 7
- February 10, 2007—Week 6
- February 3, 2007—Week 5
- January 27, 2007—Week 4
- January 20, 2007—Week 3
- January 13, 2007—Week 2
- January 6, 2007—Week 1
- December 30, 2006—Week 52
- December 23, 2006—Week 51
- December 16, 2006—Week 50
- December 9, 2006—Week 49
- December 2, 2006—Week 48
- November 25, 2006—Week 47
- November 18, 2006—Week 46
- November 11, 2006—Week 45
- November 4, 2006—Week 44
- October 28, 2006—Week 43
- October 21, 2006—Week 42
- October 14, 2006—Week 41
- October 7, 2006—Week 40
- 2005-06 Influenza Season Summary
- May 20, 2006—Week 20
- May 13, 2006—Week 19
- May 6, 2006—Week 18
- April 29, 2006—Week 17
- April 22, 2006—Week 16
- April 15, 2006—Week 15
- April 8, 2006—Week 14
- April 1, 2006—Week 13
- March 25, 2006—Week 12
- March 18, 2006—Week 11
- March 11, 2006—Week 10
- March 4, 2006—Week 9
- February 25, 2006—Week 8
- February 18, 2006—Week 7
- February 11, 2006—Week 6
- February 4, 2006—Week 5
- January 28, 2006—Week 4
- January 21, 2006—Week 3
- January 14, 2006—Week 2
- January 7, 2006—Week 1
- December 31, 2005—Week 52
- December 24, 2005—Week 51
- December 17, 2005—Week 50
- December 10, 2005—Week 49
- December 3, 2005—Week 48
- November 26, 2005—Week 47
- November 19, 2005—Week 46
- November 12, 2005—Week 45
- November 5, 2005—Week 44
- October 29, 2005—Week 43
- ctober 22, 2005—Week 42
- October 15, 2005—Week 41
- October 8, 2005—Week 40
- 2004-05 Influenza Season Summary
- May 21, 2005—Week 20
- May 14, 2005—Week 19
- May 7, 2005—Week 18
- April 30, 2005—Week 17
- April 23, 2005—Week 16
- April 16, 2005—Week 15
- April 9, 2005—Week 14
- April 2, 2005—Week 13
- March 26, 2005—Week 12
- March 19, 2005—Week 11
- March 12, 2005—Week 10
- March 5, 2005—Week 9
- February 26, 2005—Week 8
- February 19, 2005—Week 7
- February 12, 2005—Week 6
- February 5, 2005—Week 5
- January 29, 2005—Week 4
- January 22, 2005—Week 3
- January 15, 2005—Week 2
- January 8, 2005—Week 1
- January 1, 2005—Week 52
- December 25, 2004—Week 51
- December 18, 2004—Week 50
- December 11, 2004—Week 49
- December 4, 2004—Week 48
- November 27, 2004—Week 47
- November 20, 2004—Week 46
- November 13, 2004—Week 45
- November 6, 2004—Week 44
- October 30, 2004—Week 43
- October 23, 2004—Week 42
- October 16, 2004—Week 41
- October 9, 2004—Week 40
- 2003-04 Influenza Season Summary
- May 22, 2004—Week 20
- May 15, 2004—Week 19
- May 8, 2004—Week 18
- May 1, 2004—Week 17
- April 24, 2004—Week 16
- April 17, 2004—Week 15
- April 10, 2004—Week 14
- April 3, 2004—Week 13
- March 27, 2004—Week 12
- March 20, 2004—Week 11
- March 13, 2004—Week 10
- March 6, 2004—Week 9
- February 28, 2004—Week 8
- February 21, 2004—Week 7
- February 14, 2004—Week 6
- February 7, 2004—Week 5
- January 31, 2004—Week 4
- January 24, 2004—Week 3
- January 17, 2004—Week 2
- January 10, 2004—Week 1
- January 3, 2004—Week 53
- December 27, 2003—Week 52
- December 20, 2003—Week 51
- December 13, 2003—Week 50
- December 6, 2003—Week 49
- November 29, 2003—Week 48
- November 22, 2003—Week 47
- November 15, 2003—Week 46
- November 8, 2003—Week 45
- November 1, 2003—Week 44
- October 25, 2003—Week 43
- 2002-03 Influenza Season Summary
- May 17, 2003—Week 20
- May 10, 2003—Week 19
- May 3, 2003—Week 18
- April 26, 2003—Week 17
- April 19, 2003—Week 16
- April 12, 2003—Week 15
- April 5, 2003—Week 14
- March 29, 2003—Week 13
- March 22, 2003—Week 12
- March 15, 2003—Week 11
- March 8, 2003—Week 10
- March 1, 2003—Week 9
- February 22, 2003—Week 8
- February 15, 2003—Week 7
- February 8, 2003—Week 6
- February 1, 2003—Week 5
- January 25, 2003—Week 4
- January 18, 2003—Week 3
- January 11, 2003—Week 2
- January 4, 2003—Week 1
- December 28, 2002—Week 52
- December 21, 2002—Week 51
- December 14, 2002—Week 50
- December 7, 2002—Week 49
- November 30, 2002—Week 48
- November 23, 2002—Week 47
- November 16, 2002—Week 46
- November 9, 2002—Week 45
- November 2, 2002—Week 44
- October 26, 2002—Week 43
- October 19, 2002—Week 42
- October 12, 2002—Week 41
- October 5, 2002—Week 40
- 2001-02 Influenza Season Summary
- May 18, 2002—Week 20
- May 11, 2002—Week 19
- May 4, 2002—Week 18
- April 27, 2002—Week 17
- April 20, 2002—Week 16
- April 13, 2002—Week 15
- April 13, 2002—Week 15
- April 6, 2002—Week 14
- March 30, 2002—Week 13
- March 23, 2002—Week 12
- March 16, 2002—Week 11
- March 9, 2002—Week 10
- March 2, 2002—Week 9
- February 23, 2002—Week 8
- February 16, 2002—Week 7
- February 9, 2002—Week 6
- February 2, 2002—Week 5
- January 26, 2002—Week 4
- January 19, 2002—Week 3
- January 12, 2002—Week 2
- January 5, 2002—Week 1
- December 29, 2001—Week 52
- December 22, 2001—Week 51
- December 15, 2001—Week 50
- December 8, 2001—Week 49
- December 1, 2001—Week 48
- November 24, 2001—Week 47
- November 17, 2001—Week 46
- November 10, 2001—Week 45
- November 3, 2001—Week 44
- October 27, 2001—Week 43
- October 20, 2001—Week 42
- October 13, 2001—Week 41
- October 6, 2001—Week 40
- 2000-01 Influenza Season Summary
- May 19, 2001—Week 20
- May 12, 2001—Week 19
- May 5, 2001—Week 18
- April 28, 2001—Week 17
- April 21, 2001—Week 16
- April 14, 2001—Week 15
- April 7, 2001—Week 14
- March 31, 2001—Week 13
- March 24, 2001—Week 12
- March 17, 2001—Week 11
- March 10, 2001—Week 10
- March 3, 2001—Week 9
- February 24, 2001—Week 8
- February 17, 2001—Week 7
- February 10, 2001—Week 6
- February 3, 2001—Week 5
- January 27, 2001—Week 4
- January 20, 2001—Week 3
- January 13, 2001—Week 2
- January 6, 2001—Week 1
- December 30, 2000—Week 52
- December 23, 2000—Week 51
- December 16, 2000—Week 50
- December 9, 2000—Week 49
- December 2, 2000—Week 48
- November 25, 2000—Week 47
- November 18, 2000—Week 46
- November 11, 2000—Week 45
- November 4, 2000—Week 44
- October 28, 2000—Week 43
- October 21, 2000—Week 42
- October 14, 2000—Week 41
- October 7, 2000—Week 40
- 1999-00 Influenza Season Summary
- May 20, 2000—Week 20
- May 6, 2000—Week 18
- April 22, 2000—Week 16
- April 15, 2000—Week 15
- April 8, 2000—Week 14
- April 1, 2000—Week 13
- March 25, 2000—Week 12
- March 18, 2000—Week 11
- March 11, 2000—Week 10
- March 4, 2000—Week 9
- February 26, 2000—Week 8
- February 19, 2000—Week 7
- February 12, 2000—Week 6
- February 5, 2000—Week 5
- January 29, 2000—Week 4
- January 22, 2000—Week 3
- January 15, 2000—Week 2
- January 8, 2000—Week 1
- January 1, 2000—Weeks 51 and 52
- December 18, 1999—Week 50
- December 11, 1999—Week 49
- December 4, 1999—Week 48
- November 27, 1999—Week 47
- November 20, 1999—Week 46
- November 13, 1999—Week 45
- November 6, 1999—Week 44
- October 30, 1999—Week 43
- October 23, 1999—Week 42
- October 16, 1999—Week 41
- October 9, 1999—Week 40
- October 18, 2003—Week 42
- October 11, 2003—Week 41
- October 4, 2003—Week 40
*Pediatric influenza hospitalization data for the 2007-2008 season from one site in the New Vaccine Surveillance Network (NVSN) contained errors. The data were reanalyzed and updated results were posted in the May 17, 2008, week 20 report. Other influenza surveillance systems are unaffected.
Last Reviewed: March 17, 2023, 11:00 AM
