Swine flu 'in decline' in Mexico

Swine flu in Mexico, the epicentre of the world outbreak, has peaked, the Mexican health minister has said.Jose Angel Cordova said the virus, blamed for at least 19 deaths in Mexico, appeared to have peaked between 23-28 April."The evolution of the epidemic is now in its declining phase," Mr Cordova told a news conference.World Health Organization officials said authorities should remain vigilant as the virus could return.Asked about Mr Cordova's comments, WHO official Gregory Hartl said the current "round of activity" could have peaked.But he added: "We cannot lower our guard. There is a high possibility that this virus will come back, especially in colder periods."