How serious is bird flu? | On Balance

The Food and Drug Administration has found that about one in five samples of retail milk contain traces of highly contagious bird flu, though these findings may not indicate that consumers are at risk. Dr. Richard Webby, director of the WHO Collaborating Centre for Studies on the Ecology of Influenza in Animals and Birds, weighs in on how concerning the outbreak is.

"On Balance with Leland Vittert" takes a critical look at some of the day's hottest subjects. Weekdays at 7p/6C. #OnBalance

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