What is the reported mortality rate range for AHS?

What is the reported mortality rate range for AHS?

• A. 10-20%
• B. 5-10%
• C. 30-60%
• D. 50-95%

Answer: (D)

African horse sickness is highly lethal in susceptible horses, with mortality varying by form. In outbreaks, many horses succumb, especially in the most severe pulmonary form, where fatality can approach 90–95%. Overall, mortality across all cases tends to be around half or more, leading to a commonly cited range of roughly 50% to 95%. Some horses have milder forms and survive, but the disease can be devastating when the virulent forms predominate. So, the broad 50–95% range best captures the reality of AHS mortality.

African horse sickness is highly lethal in susceptible horses, with mortality varying by form. In outbreaks, many horses succumb, especially in the most severe pulmonary form, where fatality can approach 90–95%. Overall, mortality across all cases tends to be around half or more, leading to a commonly cited range of roughly 50% to 95%. Some horses have milder forms and survive, but the disease can be devastating when the virulent forms predominate. So, the broad 50–95% range best captures the reality of AHS mortality.