H5N1 bird flu is getting better at spreading between mammals but does not yet spread as easily as seasonal flu, a Centers for Disease Control and Prevention (CDC) study suggests.
H5N1 has been detected in at least 46 people in the U.S. this year, causing only mild illnesses so far. The CDC maintains that the virus still poses little risk to the general public, but as a precaution, scientists have explored whether the avian virus has adapted to infect mammals.
