Bird Flu May 18 2024. To infect mammals, the avian influenza virus must mutate to overcome two main barriers: New insights on how bird flu crosses the species barrier.

Conjunctivitis isn’t the most common symptom of bird flu in humans, but it has been documented in some people infected with different strains, such as in a 2003 outbreak of. To infect mammals, the avian influenza virus must mutate to overcome two main barriers: