Why is Virulent Newcastle Disease (VND) a concern for the poultry industry?

Virulent Newcastle Disease (VND) is a significant concern for the poultry industry primarily due to its high virulence and ability to spread rapidly among avian populations. When a flock is infected with VND, the disease can cause severe clinical signs and high mortality rates. This not only impacts the health and welfare of the birds but also poses economic threats due to loss of productivity, increased veterinary costs, and trade restrictions.

The rapid transmission of VND is particularly alarming, as the virus can spread through direct contact with infected birds or indirectly through contaminated equipment, feed, or personnel. Such ease of propagation makes controlling outbreaks difficult, leading to potential widespread outbreaks that can decimate flocks, including both commercial and backyard poultry.

In contrast, other options present characteristics that do not align with the nature of VND. The disease cannot be classified as non-threatening, nor is it easily treatable; instead, prevention through vaccination and biosecurity measures is crucial. Therefore, the high virulence and rapid spread of VND make it a pressing issue within the poultry industry.