After the reported terror threat, influenza A (H1N1) cast its shadow over the World Badminton Championship on Tuesday with the doubles coach of the Malaysian team displaying symptoms of the viral disease that has killed eight people in India.

Jeremy Gan has been quarantined at the Andhra Pradesh Chest Hospital, the nodal centre to deal with swine flu cases, and his samples have been sent for testing for influenza A (H1N1) virus, organisers of the event said.