London, November 12 'Twilight' actor Robert Pattinson has described the film's sequel's growing craze as 'a virus.'

The star, who was present at the UK fan party for New Moon, said he is surprised by the movie's popularity.

"We went to Japan earlier on in the year. There wasn't that much of a reaction - but last week when we went again, it suddenly exploded, the same as here," the Telegraph quoted him as saying.

He added: "I don't know how, it just explodes so quickly. It takes seven months to take hold - it's like a virus.'

"I'm only here for a couple of hours. I used to live round the corner - it's really bizarre being in Battersea Park.

"It's so funny being close to home and the same thing happens. I always thought it was a foreign thing."

The film released in the UK on November 20. (ANI)