Photo taken on May 6, 2009 shows the South Hampstead High School in London. Five British schools hit by A/H1N1 flu have been temporarily closed up, announced the government's Health Protection Agency on May 5. [Xinhua]

A man walks past the gate of the South Hampstead High School in London, on May 6, 2009. Five British schools hit by A/H1N1 flu have been temporarily closed up, announced the government's Health Protection Agency on May 5. [Xinhua]