Archived Seasonal Influenza Weekly Reports

Influenza (Flu) Activity in Indiana 2022 – 2023

• Week 20 (May 14 – May 20)
• Week 19 (May 07 – May 13)
• Week 18 (Apr 30 – May 06)
• Week 17 (Apr 23 – Apr 29)
• Week 16 (Apr 16 – Apr 22)
• Week 15 (Apr 09 – Apr 15)
• Week 14 (Apr 02 – Apr 08)
• Week 13 (Mar 26 – Apr 01)
• Week 12 (Mar 19 – Mar 25)
• Week 11 (Mar 12 – Mar 18)
• Week 10 (Mar 05 – Mar 11)
• Week 09 (Feb 26 – Mar 04)
• Week 08 (Feb 19 – Feb 25)
• Week 07 (Feb 12 – Feb 18)
• Week 06 (Feb 05 – Feb 11)
• Week 05 (Jan 29 – Feb 04)
• Week 04 (Jan 22 – Jan 28)
• Week 02 (Jan 08 – Jan 14)
• Week 52 (Dec 25 – Dec 31)
• Week 50 (Dec 11 – Dec 17) 
• Week 49 (Dec 04 – Dec 10)
• Week 48 (Nov 27 – Dec 03)
• Week 47 (Nov 20 – Nov 26)
• Week 46 (Nov 13 – Nov 19)
• Week 45 (Nov 06 – Nov 12)
• Week 44 (Oct 30 – Nov 04)
• Week 43 (Oct 23 – Oct 29)
• Week 42 (Oct 16 – Oct 22)
• Week 41 (Oct 09 – Oct 15)

Influenza (Flu) Activity in Indiana 2021 – 2022

• Week 11 (Mar 13 – Mar 19)
• Week 10 (Mar 06 – Mar 12)
• Week 09 (Feb 27 – Mar 05)
• Week 08 (Feb 20 – Feb 26)
• Week 07 (Feb 13 – Feb 19)
• Week 06 (Feb 06 – Feb 12)
• Week 05 (Jan 30 – Feb 05)
• Week 04 (Jan 23 – Jan 29)
• Week 03 (Jan 16 – Jan 22)
• Week 02 (Jan 09 – Jan 15)
• Week 01 (Jan 02 – Jan 08)
• Week 52 (Dec 26 – Jan 01)
• Week 51 (Dec 19 – Dec 25)
• Week 50 (Dec 12 – Dec 18)
• Week 49 (Dec 05 – Dec 11)
• Week 48 (Nov 28 – Dec 04)
• Week 47 (Nov 21 – Nov 27)
• Week 46 (Nov 14 – Nov 20)
• Week 45 (Nov 07 – Nov 13)
• Week 44 (Oct 31 – Nov 06)
• Week 43 (Oct 24 – Oct 30)
• Week 42 (Oct 17 – Oct 23)
• Week 41 (Oct 10 – Oct 16)

Influenza (Flu) Activity in Indiana 2020 – 2021

• Week 20 (May 16 – May 22)
• Week 19 (May 09 – May15)
• Week 18 (May 02 – May 08)
• Week 17 (Apr 25 – May 01)
• Week 16 (Apr 18 – Apr 24)
• Week 15 (Apr 11 – Apr 17)
• Week 14 (Apr 04 – Apr 10)
• Week 13 (Mar 28 – Apr 03)
• Week 12 ( Mar 21 – Mar 27)
• Week 11 ( Mar 14 – Mar 20)
• Week 10 (Mar 07 – Mar 13)
• Week 09 ( Feb 28 – Mar 06) 
• Week 08 (Feb 21 – Feb 27)
• Week 07 (Feb 14 – Feb 20)
• Week 06 (Feb 07 – Feb 13) 
• Week 05 (Jan 31 – Feb 06)
• Week 04 (Jan 24 – Jan 30)
• Week 03 (Jan 17 – Jan 23)
• Week 02 (Jan 10 – Jan 16)
• Week 01 (Jan 03 – Jan 09)
• Week 53 (Dec 27 – Jan 02)
• Week 52 (Dec 20 – Dec 26)
• Week 51 (Dec 13 – Dec 19)
• Week 50 (Dec 6 – Dec 12)
• Week 49 (Nov 9 – Dec 05)
• Week 48 (Nov 22 – Nov 28)
• Week 47 (Nov 15 – Nov 21)
• Week 46 (Nov 8 – Nov 14)
• Week 45 (Nov 1 – Nov 07)
• Week 44 (Oct 25 – Oct 31)
• Week 43 (Oct 18 – Oct 24)
• Week 42 (Oct 11 – Oct 17)
• Week 41 (Oct 04 – Oct 10)
• Week 40 (Sep 27 – Oct 03)

Influenza (Flu) Activity in Indiana 2019 – 2020

• Week 20 (May 10 – May 16)
• Week 19 (May 03 – May 09)
• Week 18 (Apr 26 – Mar 02)
• Week 17 (Apr 19 – Apr 25)
• Week 16 (Apr 12 – Apr 18)
• Week 15 (Apr 05 – Apr 11)
• Week 14 (Mar 29 – Apr 04)
• Week 13 (Mar 22 – Mar 28)
• Week 12 (Mar 15 – Mar 21)
• Week 11 (Mar 08 – Mar 14)
• Week 10 (Mar 01 – Mar 07)
• Week 09 (Feb 23 – Feb 29)
• Week 08 (Feb 16 – Feb 22)
• Week 07 (Feb 09 – Feb 15)
• Week 06 (Feb 02 – Feb 08)
• Week 05 (Jan 26 – Feb 01)
• Week 04 (Jan 18 – Jan 25)
• Week 03 (Jan 12 – Jan 18)
• Week 02 (Jan 05 – Jan 11)
• Week 01 (Dec 29 – Jan 04)
• Week 52 ( Dec 22 – Dec 28)
• Week 51 ( Dec 15 – Dec 21)
• Week 50 (Dec 08 – Dec 14)
• Week 49 ( Dec 01 – Dec 07)
• Week 48 (Nov 24 – Nov 30)
• Week 47 (Nov 17 – Nov 23)
• Week 46 ( Nov 10 -Nov 16)
• Week 45 (Nov 03 – Nov 09)
• Week 44 (Oct 27 – Nov 02)
• Week 43 (Oct 20 – Oct 26)
• Week 42 (Oct 13 – Oct 19)
• Week 41 (Oct 06 – Oct 12)
• Week 40 (Sep 29 – Oct 05)

Influenza (Flu) Activity in Indiana 2018 – 2019

• Week 20 (May 12 – May 18)
• Week 19 (May 05 – May 11)
• Week 18 (Apr 28 – May 04)
• Week 17 (Apr 21 – Apr 27)
• Week 16 (Apr 14 – Apr 20) 
• Week 15 (Apr 07 – Apr 13)
• Week 14(Mar 31 – Apr 06)
• Week 13 (Mar 24 – Mar 30)
• Week 12 (Mar 17 – Mar 23)
• Week 11 (Mar 10 – Mar 16)
• Week 10 (Mar 03 – Mar 10)
• Week 09 (Feb 24 – Mar 02)
• Week 08 (Feb 17 – Feb 23)
• Week 07 (Feb 10 – Feb 16)
• Week 06 (Feb 03 – Feb 09)
• Week 05 (Jan 27 – Feb 02)
• Week 04 (Jan 20 – Jan 26)
• Week 03 (Jan 13 – Jan 19)
• Week 02 (Jan 06 – Jan 12)
• Week 01 (Dec 30 – Jan 05)
• Week 52 (Dec 23 – Dec 29)
• Week 51 (Dec 16 – Dec 22)
• Week 50 (Dec 09 – Dec 15)
• Week 49 (Dec 02 – Dec 08)
• Week 48 (Nov 25 – Dec 01)
• Week 47 (Nov 18 – Nov 24)
• Week 46 (Nov 11 – Nov 17)
• Week 45 (Nov 04 – Nov 10)
• Week 44 (Oct 28 – Nov 03)
• Week 43 (Oct 21 – Oct 27)
• Week 42 (Oct 14 – Oct 20)
• Week 41 (Oct 07 – Oct 13)
• Week 40 ( Sep 30 – Oct 06)

Influenza (Flu) Activity in Indiana 2017-2018

• Week 20 (May 13 – May 19)
• Week 19 (May 06 – May 12)
• Week 18 (Apr 29 – May 05)
• Week 17 (Apr 22 – Apr 28)
• Week 16 (Apr 15 – Apr 21)
• Week 15 (Apr 08 – Apr 14)
• Week 14 (Apr 01 – Apr 07)
• Week 13 (Mar 25 – Mar 31)
• Week 12 (Mar 18 – Mar 24)
• Week 11 (Mar 11 – Mar 17)
• Week 10 (Mar 04 – Mar 10)
• Week 09 (Feb 25 – Mar 03)
• Week 08 (Feb 18 – Feb 24)
• Week 07 (Feb 11 – Feb 17)
• Week 06 (Feb 04 – Feb 10)
• Week 05 (Jan 28 – Feb 03)
• Week 04 (Jan 21 – Jan 27)
• Week 03 (Jan 14 – Jan 20)
• Week 02 (Jan 07 – Jan 13)
• Week 01 (Dec 31 – Jan 06)
• Week 52 (Dec 24 – Dec 30)
• Week 51 (Dec 17 – Dec 23)
• Week 50 (Dec 10 – Dec 16)
• Week 49 (Dec 03 – Dec 09)
• Week 48 (Nov 26 – Dec 02)
• Week 47 (Nov 19 – Nov 25)
• Week 46 (Nov 12 – Nov 18)
• Week 45 (Nov 05 – Nov 11)
• Week 44 (Oct 29 – Nov 04)
• Week 43 (Oct 22 – Oct 28)
• Week 42 (Oct 15 – Oct 21)
• Week 41 (Oct 08 – Oct 15)
• Week 40 (Oct 01 – Oct 07)

Influenza (Flu) Activity in Indiana 2016-2017

• Week 14 (Apr 02 – Apr 08)
• Week 13 (Mar 26 – Apr 01)
• Week 12 (Mar 19 – Mar 25)
• Week 11 (Mar 12 – Mar 18)
• Week 10 (Mar 05 – Mar 11)
• Week 09 (Feb 26 – Mar 04)
• Week 08 (Feb 19 – Feb 25)
• Week 07 (Feb 12 – Feb 18)
• Week 06 (Feb 05 – Feb 11)
• Week 05 (Jan 29 – Feb 04)
• Week 04 (Jan 22 – Jan 28)
• Week 03 (Jan 15 – Jan 21)
• Week 02 (Jan 08 – Jan 14)
• Week 01 (Jan 01 – Jan 07)
• Week 52 (Dec 25 – Dec 31)
• Week 51 (Dec 18 – Dec 24)
• Week 50 (Dec 11 – Dec 17)
• Week 49 (Dec 04 – Dec 10)
• Week 48 (Nov 27 – Dec 03)
• Week 47 (Nov 20 – Nov 26)
• Week 46 (Nov 13 – Nov 19)
• Week 45 (Nov 06 – Nov 12)
• Week 44 (Oct 30 – Nov 05)
• Week 43 (Oct 23 – Oct 29)
• Week 42 (Oct 16 – Oct 22 )
• Week 41 (Oct 09 – Oct 01)
• Week 40 (Oct 02 – Oct 08)
• Week 39 (Sep 25 – Oct 01)

Influenza (Flu) Activity in Indiana 2015-2016

• Week 16 (Apr 17 – Apr 23)
• Week 15 (Apr 10 – Apr 16)
• Week 14 (Apr 03 – Apr 09)
• Week 13 (Mar 27 – Apr 02)
• Week 12 (Mar 20 – Mar 26)
• Week 11 (Mar 13 – Mar 19)
• Week 10 (Mar 06 – Mar 12)
• Week 09 (Feb 28 – Mar 05)
• Week 08 (Feb 21 – Feb 27)
• Week 07 (Feb 14 – Feb 20)
• Week 06 (Feb 07 – Feb 13)
• Week 05 (Jan 31 – Feb 06)
• Week 04 (Jan 24 – Jan 30)
• Week 03 (Jan 16 – Jan 23)
• Week 02 (Jan 10 – Jan 16)
• Week 01 (Jan 03 – Jan 09)
• Week 52 (Dec 27 – Jan 02)
• Week 51 (Dec 20 – Dec 26)
• Week 50 (Dec 13 – Dec 19)
• Week 49 (Dec 06 – Dec 12)
• Week 48 (Nov 29 – Dec 05)
• Week 47 (Nov 22 – Nov 28)
• Week 46 (Nov 15 – Nov 21)
• Week 45 (Nov 08 – Nov 14)
• Week 44 (Nov 01 – Nov 07)
• Week 43 (Oct 25 – Oct 31)
• Week 42 (Oct 18 – Oct 24)
• Week 41 (Oct 11 – Oct 17)

Influenza (Flu) Activity in Indiana 2014-2015

• Week 12 (Mar 22 – Mar 28)
• Week 11 (Mar 15 – Mar 21)
• Week 10 (Mar 08 – Mar 14)
• Week 09 (Mar 01 – Mar 07)
• Week 08 (Feb 22 – Feb 28)
• Week 07 (Feb 15 – Feb 21)
• Week 06 (Feb 08 – Feb 14)
• Week 05 (Feb 01 – Feb 07)
• Week 04 (Jan 25 – Jan 31)
• Week 03 (Jan 18 – Jan 24)
• Week 02 (Jan 11 – Jan 17)
• Week 01 (Jan 04 – Jan 10)
• Week 53 (Dec 28 – Jan 03)
• Week 52 (Dec 21 – Dec 27)
• Week 51 (Dec 14 – Dec 20)
• Week 50 (Dec 07 – Dec 13)
• Week 49 (Nov 30 – Dec 06)
• Week 48 (Nov 23 – Nov 29)

Influenza (Flu) Activity in Indiana 2013-2014

• Week 13 (Mar 23 – Mar 29)
• Week 12 (Mar 16 – Mar 22)
• Week 11 (Mar 09 – Mar 15)
• Week 10 (Mar 02 – Mar 08)
• Week 09 (Feb 23 – Mar 01)
• Week 08 (Feb 16 – Feb 22)
• Week 07 (Feb 09 – Feb 15)
• Week 06 (Feb 02 – Feb 08)
• Week 05 (Jan 26 – Feb 01)
• Week 04 (Jan 19 – Jan 25)
• Week 03 (Jan 12 – Jan 18)
• Week 02 (Jan 04 – Jan 11)
• Week 01 (Dec 29 – Jan 04)
• Week 52 (Dec 22 – Dec 28)
• Week 50 (Dec 17 – Dec 21)

Influenza (Flu) Activity in Indiana 2012-2013

• Week 08 (Feb 17 – Feb 23)
• Week 07 (Feb 10 – Feb 16)
• Week 06 (Feb 03 – Feb 09)
• Week 05 (Jan 27 – Feb 02)
• Week 04 (Jan 20 – Jan 26)
• Week 03 (Jan 13 – Jan 19)
• Week 02 (Jan 06 – Jan 12)