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,

Three of America’s top milk-producing states are not participating in the U.S. Department of Agriculture’s program designed to catch the spread of the virus.

Researchers have stressed that bird flu still poses a minimal risk to the general public, though that may change as the virus continues to circulate and potentially mutate. But the many empty shelves in stores and higher prices on the eggs that people can find have raised concerns among consumers about the safety of the egg supply.

Egg prices in America have been surging, and now it may be harder for people to keep the breakfast staple in their fridge. As the bird flu decimates flocks of laying hens and restricts their supply, grocery stores are implementing new policies to prevent people from hoarding eggs.