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lineup of black and white cows sticking their heads thorough a metal fence with some cows looking at a small black bird standing on the dirt path in front of them
Since H5N1 made the unexpected jump from birds to cattle, experts are increasingly worried about human spread.

Rodrigo Abd/AP Photo

  • The bird flu, or avian influenza, is increasingly worrying public-health experts.
  • The H5N1 bird flu virus is changing, creeping closer to humans, and getting more opportunities to adapt.
  • A bird flu pandemic isn't inevitable, but it is possible. Here's why you should know what's going on.

Bird flu is flying wild, and it has many infectious disease experts more worried now than ever.

Tags
Science, bird-flu, h5-n1, virus, avian-influenza, infectious-disease, pandemics
Source
Why 4 new bird flu developments have experts worried about the virus