Mexican authorities have slaughtered more than a million chickens infected with bird flu.
Investigators with Mexico's Agriculture Ministry found the virus in 18 farms in the Mexican state of Guanajuato. The flu strain--H7N3--is limited to birds and poses no threat to humans.
Since the outbreak began, Mexican officials have vaccinated 1.9 million chickens, with plans to vaccinate millions more. So far, 2.1 million chickens have been slaughtered, 1.2 million that were infected with the bird flu.
According to Mexico's food safety agency, the outbreak has been contained. Officials state that food prices should not rise, as the numbers of chickens killed were only a small fraction of the country's chicken population.
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