Farmers warn to keep birds indoors as bird flu East England.

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The government's chief veterinary officer said they did not rule out another lockdown in the UK due to "unprecedented levels" of bird flu.

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The country has seen its biggest outbreak in the past year, with over 170 cases.

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From Wednesday, birders in parts of Norfolk, Suffolk, and Essex must keep their birds indoors and follow stringent biosecurity measures.

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Christine Middlemiss described the increase in infections as a "global phenomenon."

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The cases have been reported locally on at least 17 campuses since last month.

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Middle on Saturday, the mandatory housing measures apply to all poultry and captive birds, regardless of type or size.

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After several outbreaks last month, the affected areas were placed in the Avian Influenza Containment Zone.

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Alistair Bryce, who owns Havensfield Eggs in Eye, Suffolk, told the BBC he believed the current Defra strategy was "not working."

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"We have little or no control over wild birds coming to your site – the flu is ahead of the curve now," he said.