This Morning star Vanessa Feltz has revealed her daughter is "terribly unwell" in hospital.
A worried Vanessa took to Instagram from hospital on Sunday night - four days after her daughter was admitted after falling seriously ill with the flu.
Vanessa, who has two daughters Allegra, 36, and Saskia, 33, didn't say which one was poorly.
The presenter said: "Speaking from my daughter’s hospital bed. She has been on a drip since Thursday night. And it turns out what she's got pure and simply flu. It's influenza. It's the flu bug that all the doctors warned us was coming this winter.
"She's got a particularly virulent horrible, horrible case of it. And guess what? She had she has been vaccinated and all the doctors have said if she hadn't been she would have been even worse and believe me, it isn't worth thinking about."
Vanessa urged people to go and get the flu jab as she added: "She wouldn't want anyone to go through what she's going through. And neither would I."
A host of Vanessa's pals took to the comment section to provide support.
Carol Vorderman wrote: "Oh V. I hope she gets better fast. Sending you all love", while Ruth Langsford added: "Sending her wishes for a speedy recovery Vanessa and lots of love to you and all the family x x".
Zoe Ball typed: "sending your girl so much love V. hold tight darling x".
Flu levels are continuing to rise in England as health experts warned parents of two and three-year-olds to get them vaccinated.
Rates are estimated to be highest among people aged 15 to 44, with 13.4% of laboratory samples from this age group testing positive, according to the figures from the UK Health Security Agency (UKHSA).
Rates are second highest in those aged five to 14 year-olds, with 10.4% of samples from this age group testing positive.
It comes as the NHS revealed it administered 13.2 million flu vaccinations since September.
The UKHSA said flu vaccine uptake this year is comparable to last for those aged 65 and over, people at risk and pregnant women, but lower in two and three-year-olds, at 20.3% and 21.8%.
