No matter how many times pork processor Smithfield Foods ( SFD) assures the public that their herd has not been affected by the swine flu, investors and consumers remain weary.

Shares of the company fell 5% in afternoon trading to $8.68.

With all eyes this week on the pork processor, Chief Executive C. Larry Pope said the company decided to conduct more tests on pigs at its plant in Veracruz, which is run with a Mexican company. The results will be available in a few days and will be made public, Pope said.

U.S. health officials have said swine flu can not be contracted by eating pork that is properly cooked, but is, instead, transmitted by people.

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