![Update: Influenza Activity in the United States During the 2016–17 Season and Composition of the 2017–18 Influenza Vaccine | MMWR Update: Influenza Activity in the United States During the 2016–17 Season and Composition of the 2017–18 Influenza Vaccine | MMWR](https://www.cdc.gov/mmwr/volumes/66/wr/figures/m6625a3f1.gif)
Update: Influenza Activity in the United States During the 2016–17 Season and Composition of the 2017–18 Influenza Vaccine | MMWR
![Update: Influenza Activity in the United States During the 2016–17 Season and Composition of the 2017–18 Influenza Vaccine | MMWR Update: Influenza Activity in the United States During the 2016–17 Season and Composition of the 2017–18 Influenza Vaccine | MMWR](https://www.cdc.gov/mmwr/volumes/66/wr/figures/m6625a3f3.gif)
Update: Influenza Activity in the United States During the 2016–17 Season and Composition of the 2017–18 Influenza Vaccine | MMWR
![Update: Influenza Activity in the United States During the 2016–17 Season and Composition of the 2017–18 Influenza Vaccine | MMWR Update: Influenza Activity in the United States During the 2016–17 Season and Composition of the 2017–18 Influenza Vaccine | MMWR](https://www.cdc.gov/mmwr/images/social-media/mm6625a3_update_influenza.jpg)