Strictly Come Dancing bosses are said to be in a panic after Ali Bastian was struck down by a virus.

Ali’s dance partner, Brian Fortuna was ill first and passed the virus on. Staff are said to be worried that the pair are suffering from swine flu.

One pal told The Sun: “We were petrified Ali had caught swine flu, but she has been downplaying it. She made it to her rehearsal but she fears it getting worse.

“She is due to perform the American smooth with her very own smooth American, Brian, and she really wants to put in a good show.”