PM promises action as flu spreads
Updated on 28 April 2009
The World Health Organisation upgrades the swine flu outbreak to a phase four alert following the deaths of 152 people in Mexico.
It has warned that the virus can no longer be contained.
In Britain, Gordon Brown has pledged the government will take "all the urgent action that is necessary" to halt the spread of swine flu.
As the prime minister convened an emergency meeting of COBRA, the UK civil contingency agency, it was reported that up to 14 people are being tested for the virus in Britain.
A Scottish couple, who had just returned from honeymoon in Mexico, have been named as the first two Britons to fall ill with the virus.
