Bird flu infections more widespread among US dairy workers than thought – study

Guardian Rate of dairy workers with antibodies to bird flu significantly higher than known cases of virus. Eight out of 115 dairy workers, or 7%, who worked with H5N1-infected cows in Michigan and Colorado have antibodies to bird flu, according to a new study from the US Centers for Disease Control and Prevention (CDC) – a rate significantly higher than known cases of the highly pathogenic virus, which means existing efforts are not protecting, diagnosing and treating people at risk, experts said.

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