What is a major concern regarding Highly Pathogenic Avian Influenza (HPAI)?

Highly Pathogenic Avian Influenza (HPAI) is a significant concern primarily because of its ability to cause high mortality rates in bird populations. This viral infection is particularly dangerous as it can lead to devastating outbreaks among poultry, resulting in severe economic losses and threats to global food security. The virus can spread rapidly among birds, leading to widespread mortality, particularly in domestic poultry flocks.

HPAI can also have additional implications for zoonotic transmission, meaning that it has the potential to infect humans and pose public health risks, although the primary concern remains its high mortality in avian species. The other options understate the severity and impact of HPAI. It is indeed infectious, can cause high mortality, and while it may pose risks to humans, the main worry lies with its lethal effects on birds. Understanding the high mortality associated with HPAI in birds is crucial for managing outbreaks and implementing control measures effectively.