The global spread of (highly pathogenic) H5N1 in birds is considered a significant pandemic threat.

Several were highly pathogenic to all of these insects, and selected for further evaluation.

These forms of the virus are highly pathogenic to equines and can also affect human health.

Avian flu (H5N1) is caused by a highly pathogenic virus.

This strain was "highly pathogenic" (deadly to birds) but caused neither illness nor death in humans.

Resource for teaching high school biology students about avian influenza, specifically highly pathogenic H5N1.

"Could someone make a highly pathogenic virus like ebola?"

H5N1 is different from all previously known highly pathogenic avian flu viruses in its ability to be spread by animals other than poultry.

Ascaridia is not a highly pathogenic worm, and any effects are seen in young birds, adults appearing relatively unaffected.

It is highly pathogenic and has a high resistance to freezing.