![CDC Flu on X: "CDC estimates #flu has caused at least 26 million illnesses, 290,000 hospitalizations, and 18,000 deaths in the U.S. so far this season. A #FluVax is the best protection CDC Flu on X: "CDC estimates #flu has caused at least 26 million illnesses, 290,000 hospitalizations, and 18,000 deaths in the U.S. so far this season. A #FluVax is the best protection](https://pbs.twimg.com/media/FqUNIbNXsAAcQvH.jpg)
CDC Flu on X: "CDC estimates #flu has caused at least 26 million illnesses, 290,000 hospitalizations, and 18,000 deaths in the U.S. so far this season. A #FluVax is the best protection
![Influenza Activity — United States, 2013–14 Season and Composition of the 2014–15 Influenza Vaccines Influenza Activity — United States, 2013–14 Season and Composition of the 2014–15 Influenza Vaccines](https://www.cdc.gov/mmwr/preview/mmwrhtml/figures/m6322a2f1.gif)
Influenza Activity — United States, 2013–14 Season and Composition of the 2014–15 Influenza Vaccines
![CDC Flu on X: "Seasonal flu activity remains low nationally, according to this week's #FluView report. Less than 1% of respiratory specimens tested by clinical labs are positive for flu. Full report: CDC Flu on X: "Seasonal flu activity remains low nationally, according to this week's #FluView report. Less than 1% of respiratory specimens tested by clinical labs are positive for flu. Full report:](https://pbs.twimg.com/media/Fq4Ga8aWcAErbA_.jpg:large)
CDC Flu on X: "Seasonal flu activity remains low nationally, according to this week's #FluView report. Less than 1% of respiratory specimens tested by clinical labs are positive for flu. Full report:
![Update: Influenza Activity in the United States During the 2018–19 Season and Composition of the 2019–20 Influenza Vaccine | MMWR Update: Influenza Activity in the United States During the 2018–19 Season and Composition of the 2019–20 Influenza Vaccine | MMWR](https://www.cdc.gov/mmwr/volumes/68/wr/figures/mm6824a3-F2.gif)
Update: Influenza Activity in the United States During the 2018–19 Season and Composition of the 2019–20 Influenza Vaccine | MMWR
![Decreased Influenza Activity During the COVID-19 Pandemic — United States, Australia, Chile, and South Africa, 2020 | MMWR Decreased Influenza Activity During the COVID-19 Pandemic — United States, Australia, Chile, and South Africa, 2020 | MMWR](https://www.cdc.gov/mmwr/volumes/69/wr/figures/mm6937a6-F1.gif)