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Mexico destroys 8 million chickens amid bird flu outbreak

Eight million chickens have so far been slaughtered in Mexico and 66 million more were vaccinated in a bid to contain a bird flu outbreak in the west of the country, authorities said. The agriculture ministry said in a statement that during the vaccination process in the Los Altos region…

Lab study raises questions over nano-particle impact

PARIS — Tests involving chickens have raised questions about the impact on health from engineered nano-particles, the ultra-fine grains commonly used in drugs and processed foods, scientists said on Sunday. Chickens exposed to high oral doses of polystyrene particles 50 nanometres (50 billionths of a metre) across absorbed less iron…