Teachers and preschoolers wear face masks as a precaution against the H1N1 influenza pandemic as they visit a zoo in Kuala Lumpur July 29, 2009. There may be no escape from H1N1 swine flu, which according to the latest World Health Organisation figures has spread to the most remote parts of the planet including popular island getaways. REUTERS/Bazuki Muhammad (MALAYSIA SOCIETY HEALTH)