The Harry Potter cast have shrugged off a frightening brush with swine flu.

Rupert Grint, who plays Ron Weasley in the film franchise, was confined to his bedroom "for a couple of days" after being diagnosed with the H5N1 virus.

But the illness failed to seriously disrupt the filming of the latest adventure Harry Potter and the Half-Blood Prince.

Grint said: "I didn't find out until quite late that it was swine flu. I didn't even notice it was anything different. It was just a pretty ordinary kind of flu.

"It was nothing really."

Emma Watson, who shares an on-screen kiss with the Grint in the movie, said she had not come down with the virus but said the news had been "a bit scary".

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