Americans told to wear masks as swine flu spreads round globe

Churches stood empty in Mexico City yesterday and football matches were played to vacant stadiums, as soldiers and health workers patrolled the subway in an effort to prevent the spread of a deadly strain of swine flu.North of the border, in the US, doctors were advising people worried about the illness to buy painters’ masks from DIY stores as a precautionary measure. Authorities across the globe were torn between the imperative of slowing the spread of a potential flu pandemic and the need to avoid bringing every big city to a grinding halt.