A student with a mask prepares to leave the school in Hong Kong on June 11, 2009. Hong Kong Chief Executive Donald Tsang announces on June 11, 2009 that all kindergartens, primary schools, child care centers and special schools in Hong Kong will be closed for 14 days starting Friday to prevent the local transmission of A/H1N1 influenza. Twelve students from St. Paul's Convent School in Causeway Bay were confirmed to have contracted the A/H1N1 virus and this brought about the decision of class suspension arrangement.[Xinhua]