Misbun Sidek, coach of the Malaysian team participating in the World Badminton Championships, has displayed symptoms of swine flu and his samples have been sent for testing for influenza A (H1N1) virus, organisers of the event said on Tuesday.

"Sidek complained of throat pain last evening. His samples have been sent for testing. We don't want to take any chance. We are taking all precautions," Pullela Gopichand, director of the organising committee and Indian team coach, told IANS.