When it comes to the potential of H5N1 avian flu, otherwise known as bird flu, picking up mutations that may lead to human-to-human spread, that "train has already left the station," warns one infectious disease expert.

Bird flu is infecting more people than we think. We need to stop it now before a new pandemic begins Right after President Donald Trump took office, amid the flurry of executive orders and agency upheavals,

That's the way one scientist puts it — referring to how infected wild birds survive long enough to spread it to birds and mammals around the world. And that's a serious risk for human health.

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.

H5N1 isn’t going away anytime soon and could become a pandemic. Here are some tips to help you understand your risk