Lack of US bird flu tracking in cows may raise risk of human infection

Bird flu is now in US dairy herds

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Public health experts warn not enough is being done to contain the spread of a bird flu virus in US dairy cows, raising the risk of the disease spilling over into people.

More than a month has passed since the US Department of Agriculture (USDA) first announced that dairy cattle in several US states had tested positive for a bird flu virus called H5N1, which has killed millions of birds and hundreds of mammals worldwide. The virus has since been detected in 36…

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