Northern California’s first human West Nile virus case of the year has been confirmed in Butte County, according to local health officials.

Local health officials say Chicago has reached a “high risk” level of the West Nile virus because mosquitoes are testing positive earlier and could lead to a longer lasting, heightened risk this

North Dakota Health and Human Services says 11 people have been hospitalized following an increase in West Nile Virus in recent weeks.