Egg farmers are starting to worry that the fight against the avian flu is unwinnable. Producers across the country are bleeding millions of dollars to invest in biosecurity efforts to rebuild their rapidly dying flocks — all while protecting humans from catching the deadly disease,

The egg industry has spent millions of dollars on measures to prevent avian influenza from devastating their flocks.

Almost 1.8 million farmed and captive birds have been culled in the past three months because of the spread of avian flu across the UK, the BBC has learned. There have been 33 outbreaks of the virus on farms so far,