Bird flu, caused by the H5N1 virus, is an increasing concern among scientists and health authorities. Although it currently spreads primarily among birds and some mammals, there is a potential risk of mutation that could enable human-to-human transmission. Human cases of H5N1 have a high mortality rate, and a pandemic could result in severe global health and economic impacts. The recent rise in Moderna's stock highlights the ongoing efforts and challenges in developing effective vaccines to combat this potential threat.
