JAMB - Biology (2007 - No. 3)
The causative agent of bird flu is a
protozoan
virus
bacterium
fungus
解释
Bird flu, also known as avian influenza, is caused by influenza A viruses.
The virus spreads through contact with infected birds, their droppings, or contaminated surfaces. Humans can become infected by inhaling dust particles from infected birds or by touching contaminated surfaces.