Why is bird flu (H5N1)considered an emerging disease whereas HIV is not?

Question

Quizplus · Accepted Answer

To be considered an emerging disease, the disease has to have been recognized in the past 20 years. HIV has been recognized since the 1950s. The deadliness, source, or number of individuals infected by a disease do not classify it as an emerging disease. A more pathogenic version of bird flu (H5N1) emerged approximately 10 years ago, increasing the chance that transmissions can occur among wild birds, domestic birds, and humans.

Why Is Bird Flu (H5N1)considered an Emerging Disease Whereas HIV