North Dakota sees first West Nile death in 2026

North Dakota has recorded its first death from the mosquito-borne West Nile virus in 2026. 

The North Dakota Health and Human Services said in a news release Thursday that the person who died was over 60 years old and lived in southwest North Dakota. 

People ages 60 and older, those with underlying health conditions and those who take medications that suppress the immune system are at greatest risk of developing a severe illness, the health agency said

As of Wednesday, 25 human West Nile virus cases have been reported in 14 North Dakota counties. Fourteen people have been hospitalized. 

In 2025, North Dakota had 86 cases and two West Nile virus-related deaths. 

West Nile virus transmission usually peaks in late summer in North Dakota. As the year progresses, people may be inclined to skip mosquito protection, the agency said. 

There is no vaccine or specific treatment for the virus, so preventing mosquito bites is the best way to reduce the risk of infection. The agency recommends using repellents, wearing clothing that covers arms and legs and limiting outdoor activity after dusk and before dawn. 

People should also eliminate stagnant water and keep lawns trimmed to eliminate breeding areas. 

Most people infected with West Nile virus have no symptoms or only mild symptoms, such as fever and headache, the agency said. In more severe cases, the virus can cause high fever, severe headache, stiff neck and altered mental state. People with symptoms should see a healthcare provider immediately. 

For more information, visit hhs.nd.gov/wnv.