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First West Nile Case in the Balearic Islands: What the Horse Discovery on Menorca Means

Symptoms of West Nile Virus in Humans and Horses

Learn the common symptoms of West Nile virus in humans and horses, and when to seek medical help.

Published: April 22, 2026
First West Nile Case in the Balearic Islands: What the Horse Discovery on Menorca Means

Answer

What are the symptoms of West Nile virus in humans and horses?

In humans, West Nile infections are often mild or even unnoticed, but fever, severe headaches or neurological symptoms need medical attention. In horses, signs can include fever, weakness or unsteady coordination. Because symptoms can vary, any suspicious illness after mosquito exposure should be checked by a doctor or veterinarian.

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