As the human death toll in Mexico from an outbreak of a new type of 'swine flu' rises to a possible 177, governments around the world are on high alert and the World Health Organisation is appealing for states to step up surveillance. Governments across the globe are considering tightening rules on pigmeat imports, despite health officials insisting that pigmeat is safe for consumption. Trade restrictions will come as a huge blow to Mexican and US trade, as both countries are big players on world meat markets.
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