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Social Media links WEBSITE OF THE STATE OF SOUTH DAKOTA DEPARTMENT OF HEALTH
Doneen Hollingsworth, Secretary of Health

West Nile Virus Prevention and Control

West Nile Virus (WNV) causes bird disease that is transmitted by mosquitoes. Humans, horses and other mammals may also be infected. In humans the most serious manifestation of WNV infection is encephalitis (inflammation of the brain).

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