The number of people in Wales taking up free flu jabs is lower than in England, Ireland and Scotland.
Only half the people who are classed as most at risk of getting serious complications are protecting themselves from it.
Now doctors here are calling for more people to have a flu vaccination.
Our Health Correspondent Mariclare Carey-Jones has been investigting
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Not a bad start to the day with a few spells of sunshine! But there is rain on the way!
Some clear spells to start the night but the cloud will thicken bringing patchy rain for some!
Carwyn Jones was "received in Audience" by the Queen today. The initial handshake was photographed but their conversation remains private.