Organisers of the ITB travel trade fair in Berlin, billed as the world's biggest, said Friday they were cancelling the event over coronavirus fears. "We take our responsibility for the security and the health of our guests, exhibitors and employees very seriously. It is with a heavy heart that we have to look at the necessary cancellation of the ITB Berlin 2020," said Christian Goeke, chairman of organisers Messe Berlin. kih/har