Influenza Data & Statistical Reports
Flu Prevention
Influenza symptoms can include fever, cough, sore throat, runny or stuffy nose, body aches, headache, chills and fatigue. The best way to prevent influenza is to get an influenza vaccine each year as soon as the vaccine is available to the public. Other forms of prevention include hand washing and using alcohol-based hand sanitizers; covering your coughs and sneeze with a disposable tissue or your arm or sleeve; avoid touching your eyes, nose, or mouth; avoid close contact with persons who are sick; stay home when you are sick. Most people who develop influenza will recover with bed rest and do not need medical care or flu antiviral medications.
In certain situations (e.g., influenza outbreaks in settings like nursing homes) flu antiviral medications may be prescribed to high-risk individuals to prevent them from developing influenza. Studies show that flu antiviral medications work best for treatment when they are started within 48 hours of getting sick. However, starting treatment later can still be helpful, especially if the sick person has a high-risk health condition or is very sick from the flu. Follow your health care provider’s instructions for taking these medications.
Weekly Influenza Surveillance Reports
Archived Data
2022-2023
- Week 20 (ending 5/20/2023)
- Week 19 (ending 5/13/2023)
- Week 18 (ending 5/6/2023)
- Week 17 (ending 4/29/2023)
- Week 16 (ending 4/22/2023)
- Week 15 (ending 4/15/2023)
- Week 14 (ending 4/8/2023)
- Week 13 (ending 4/1/2023)
- Week 12 (ending 3/25/2023)
- Week 11 (ending 3/18/2023)
- Week 10 (ending 3/11/2023)
- Week 9 (ending 3/4/2023)
- Week 8 (ending 2/25/2023)
- Week 7 (ending 2/18/2023)
- Week 6 (ending 2/11/2023)
- Week 5 (ending 2/4/2023)
- Week 4 (ending 1/28/2023)
- Week 3 (ending 1/21/2023)
- Week 2 (ending 1/14/2023)
- Week 1 (ending 1/7/2023)
- Week 52 (ending 12/31/2022)
- Week 51 (ending 12/24/2022)
- Week 50 (ending 12/17/2022)
- Week 49 (ending 12/10/2022)
- Week 48 (ending 12/03/2022)
- Week 47 (ending 11/26/2022)
- Week 46 (ending 11/19/2022)
- Week 45 (ending 11/12/2022)
- Week 44 (ending 11/05/2022)
- Week 43 (ending 10/29/2022)
- Week 42 (ending 10/22/2022)
- Week 41 (ending 10/15/2022)
- Week 40 (ending 10/8/2022)
2021-2022
- Week 20 (ending 05/21/2022)
- Week 19 (ending 05/14/2022)
- Week 18 (ending 05/07/2022)
- Week 17 (ending 04/30/2022)
- Week 16 (ending 04/23/2022)
- Week 15 (ending 04/16/2022)
- Week 14 (ending 04/09/2022)
- Week 13 (ending 04/02/2022)
- Week 12 (ending 03/26/2022)
- Week 11 (ending 03/19/2022)
- Week 10 (ending 03/12/2022)
- Week 9 (ending 03/05/2022)
- Week 8 (ending 02/26/2022)
- Week 7 (ending 02/19/2022)
- Week 6 (ending 02/12/2022)
- Week 5 (ending 02/05/2022)
- Week 4 (ending 01/29/2022)
- Week 3 (ending 01/22/2022)
- Week 2 (ending 01/15/2022)
- Week 1 (ending 01/08/2022)
- Week 52 (ending 01/01/2022)
- Week 51 (ending 12/25/2021)
- Week 50 (ending 12/18/2021)
- Week 49 (ending 12/11/2021)
- Week 48 (ending 12/4/2021)
- Week 47 (ending 11/27/2021)
- Week 46 (ending 11/20/2021)
- Week 45 (ending 11/13/2021)
- Week 44 (ending 11/6/2021)
- Week 43 (ending 10/30/2021)
- Week 42 (ending 10/23/2021)
- Week 41 (ending 10/16/2021)
- Week 40 (ending 10/9/2021)
2020-2021
- Week 20 (ending 05/22/21)
- Week 19 (ending 05/15/21)
- Week 18 (ending 05/8/21)
- Week 17 (ending 05/01/21)
- Week 16 (ending 04/24/21)
- Week 15 (ending 04/17/21)
- Week 14 (ending 04/10/21)
- Week 13 (ending 04/03/21)
- Week 12 (ending 3/27/21)
- Week 11 (ending 3/20/21)
- Week 10 (ending 3/13/21)
- Week 9 (ending 3/6/21)
- Week 8 (ending 2/27/21)
- Week 7 (ending 2/20/21)
- Week 6 (ending 2/13/21)
- Week 5 (ending 2/6/21)
- Week 4 (ending 1/30/21)
- Week 3 (ending 1/23/21)
- Week 2 (ending 1/16/21)
- Week 1 (ending 1/09/21)
- Week 53 (ending 1/02/21)
- Week 52 (ending 12/26/20)
- Week 51 (ending 12/19/20)
- Week 50 (ending 12/12/20)
- Week 49 (ending 12/5/20)
- Week 48 (ending 11/28/20)
- Week 47 (ending 11/21/20)
- Week 46 (ending 11/14/20)
- Week 45 (ending 11/7/20)
- Week 44 (ending 10/31/20)
- Week 43 (ending 10/24/20)
- Week 42 (ending 10/17/20)
- Week 41 (ending 10/10/20)
- Week 40 (ending 10/3/20)
2019-2020
- Week 20 (ending 5/16/20)
- Week 19 (ending 5/9/20)
- Week 18 (ending 5/2/20)
- Week 17 (ending 4/25/20)
- Week 16 (ending 4/18/20)
- Week 15 (ending 4/11/20)
- Week 14 (ending 4/4/20)
- Week 13 (ending 3/28/20)
- Week 12 (ending 3/21/20)
- Week 11 (ending 3/14/20)
- Week 10 (ending 3/7/20)
- Week 9 (ending 2/29/20)
- Week 8 (ending 2/22/20)
- Week 7 (ending 2/15/20)
- Week 6 (ending 2/8/20)
- Week 5 (ending 2/1/20)
- Week 4 (ending 1/25/20)
- Week 3 (ending 1/18/20)
- Week 2 (ending 1/11/20)
- Week 1 (ending 1/4/20)
- Week 52 (ending 12/28/19)
- Week 51 (ending 12/21/19)
- Week 50 (ending 12/14/19)
- Week 49 (ending 12/7/19)
- Week 48 (ending 11/30/19)
- Week 47 (ending 11/23/19)
- Week 46 (ending 11/16/19)
- Week 45 (ending 11/9/19)
- Week 44 (ending 11/2/19)
- Week 43 (ending 10/26/19)
- Week 42 (ending 10/19/19)
- Week 41 (ending 10/12/19)
- Week 40 (ending 10/5/19)
2018-2019
- Week 20 (ending 5/18/19)
- Week 19 (ending 5/11/19)
- Week 18 (ending 5/4/19)
- Week 17 (ending 4/27/19)
- Week 16 (ending 4/20/19)
- Week 15 (ending 4/13/19)
- Week 14 (ending 4/6/19)
- Week 13 (ending 3/30/19)
- Week 12 (ending 3/23/19)
- Week 11 (ending 3/16/19)
- Week 10 (ending 3/9/19)
- Week 9 (ending 3/2/19)
- Week 8 (ending 2/23/19)
- Week 7 (ending 2/16/19)
- Week 6 (ending 2/9/19)
- Week 5 (ending 2/2/19)
- Week 4 (ending 1/26/19)
- Week 3 (ending 1/19/19)
- Week 2 (ending 1/12/19)
- Week 1 (ending 1/5/19)
- Week 52 (ending 12/29/18)
- Week 51 (ending 12/22/18)
- Week 50 (ending 12/15/18)
- Week 49 (ending 12/8/18)
- Week 48 (ending 12/1/18)
- Week 47 (ending 11/24/18)
- Week 46 (ending 11/17/18)
- Week 45 (ending 11/10/18)
- Week 44 (ending 11/3/18)
- Week 43 (ending 10/27/18)
- Week 42 (ending 10/20/18)
- Week 41 (ending 10/13/18)
- Week 40 (ending 10/6/18)
2017-2018
Week 20 (ending 5/19/18)
Week 19 (ending 5/12/18)
Week 18 (ending 5/5/18)
Week 17 (ending 4/28/18)
Week 16 (ending 4/21/18)
Week 15 (ending 4/14/18)
Week 14 (ending 4/7/18)
Week 13 (ending 3/31/18)
Week 12 (ending 3/24/18)
Week 11 (ending 3/17/18)
Week 10 (ending 3/10/18)
Week 9 (ending 3/3/18)
Week 8 (ending 2/24/18)
Week 7 (ending 2/17/18)
Week 6 (ending 2/10/18)
Week 5 (ending 2/3/18)
Week 4 (ending 1/27/18)
Week 3 (ending 1/20/18)
Week 2 (ending 1/13/18)
Week 1 (ending 1/6/18)
Week 52 (ending 12/30/17)
Week 51 (ending 12/23/17)
Week 50 (ending 12/16/17)
Week 49 (ending 12/9/17)
Week 48 (ending 12/2/17)
Week 47 (ending 11/25/17)
Week 46 (ending 11/18/17)
Week 45 (ending 11/11/17)
Week 44 (ending 11/4/17)
Week 43 (ending 10/28/17)
Week 42 (ending 10/21/17)
Week 41 (ending 10/14/17)
Week 40 (ending 10/7/17)
2016-2017
- Week 20 (ending 5/20/17)
- Week 19 (ending 5/13/17)
- Week 18 (ending 5/6/17)
- Week 17 (ending 4/29/17)
- Week 16 (ending 4/22/17)
- Week 15 (ending 4/15/17)
- Week 14 (ending 4/8/17)
- Week 13 (ending 4/1/17)
- Week 12 (ending 3/25/17)
- Week 11 (ending 3/18/17)
- Week 10 (ending 3/11/17)
- Week 9 (ending 3/4/17)
- Week 8 (ending 2/25/17)
- Week 7 (ending 2/18/17)
- Week 6 (ending 2/11/17)
- Week 5 (ending 2/4/17)
- Week 4 (ending 1/28/17)
- Week 3 (ending 1/21/17)
- Week 2 (ending 1/14/17)
- Week 1 (ending 1/7/17)
- Week 52 (ending 12/31/16)
- Week 51 (ending 12/24/16)
- Week 50 (ending 12/17/16)
- Week 49 (ending 12/10/16)
- Week 48 (ending 12/3/16)
- Week 47 (ending 11/26/16)
- Week 46 (ending 11/19/16)
- Week 45 (ending 11/12/16)
- Week 44 (ending 11/5/16)
- Week 43 (ending 10/29/16)
- Week 42 (ending 10/22/16)
- Week 41 (ending 10/15/16)
- Week 40 (ending 10/8/16)
2015-2016
- Week 20 (ending 5/21/16)
- Week 19 (ending 5/14/16)
- Week 18 (ending 5/7/16)
- Week 17 (ending 4/30/16)
- Week 16 (ending 4/23/16)
- Week 15 (ending 4/16/16)
- Week 14 (ending 4/9/16)
- Week 13 (ending 4/2/16)
- Week 12 (ending 3/26/16)
- Week 11 (ending 3/19/16)
- Week 10 (ending 3/12/16)
- Week 9 (ending 3/5/16)
- Week 8 (ending 2/27/16)
- Week 7 (ending 2/20/16)
- Week 6 (ending 2/13/16)
- Week 5 (ending 2/6/16)
- Week 4 (ending 1/30/16)
- Week 3 (ending 1/23/16)
- Week 2 (ending 1/16/16)
- Week 1 (ending 1/9/16)
- Week 52 (ending 1/2/16)
- Week 51 (ending 12/26/15)
- Week 50 (ending 12/19/15)
- Week 49 (ending 12/12/15)
- Week 48 (ending 12/5/15)
- Week 47 (ending 11/28/15)
- Week 46 (ending 11/21/15)
- Week 45 (ending 11/14/15)
- Week 44 (ending 11/7/15)
- Week 43 (ending 10/31/15)
- Week 42 (ending 10/24/15)
- Week 41 (ending 10/17/15)
- Week 40 (ending 10/10/15)
2014-2015
- Week 20 (ending 5/23/15)
- Week 19 (ending 5/16/15)
- Week 18 (ending 5/9/15)
- Week 17 (ending 5/2/15)
- Week 16 (ending 4/25/15)
- Week 15 (ending 4/18/15)
- Week 14 (ending 4/11/15)
- Week 13 (ending 4/4/15)
- Week 12 (ending 3/28/15)
- Week 11 (ending 3/21/15)
- Week 10 (ending 3/14/15)
- Week 9 (ending 3/7/15)
- Week 8 (ending 2/28/15)
- Week 7 (ending 2/21/15)
- Week 5 (ending 2/7/15)
- Week 4 (ending 1/31/15)
- Week 3 (ending 1/24/15)
- Week 2 (ending 1/17/15)
- Week 1 (ending 1/10/15)
- Week 53 (ending 1/3/15)
- Week 52 (ending 12/27/14)
- Week 51 (ending 12/20/14)
- Week 50 (ending 12/13/14)
- Week 49 (ending 12/6/14)
- Week 48 (ending 11/29/14)
- Week 47 (ending 11/22/14)
- Week 46 (ending 11/15/14)
- Week 45 (ending 11/8/14)
- Week 44 (ending 11/1/14)
- Week 43 (ending 10/25/14)
- Week 42 (ending 10/18/14)
- Week 41 (ending 10/11/14)
- Week 40 (ending 10/4/14)