Weekly influenza update, week 18, April 2023
Following a peak at week 51/2022, influenza activity had been decreasing across the Region until week 4/2023, before rising again to fluctuate around 25% positivity between weeks 6 and 11/2023 and decreasing below 10% positivity in week 16/2023.
![Influenza infographic, week 18 2023](https://www.ecdc.europa.eu/sites/default/files/styles/is_large/public/images/flu-infographic_2023_week18.png?itok=tZ-uiR-K)
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![Influenza infographic, week 18 2023](/sites/default/files/styles/is_thumbnail/public/images/flu-infographic_2023_week18.png?itok=cTC8Ml37)
Influenza infographic, week 18 2023 - EN - [PNG-242.35 KB]