BUTTE COUNTY, Calif. - The first confirmed 2021 human case of the West Nile Virus infection in Butte County was announced, according to Butte County Public Health Department (BCHP).
The person who is infected is over 65 years old and has a severe case of infection.
BCPH said severe illness occurs in fewer than one in 150 people.
Severe cases can last several weeks and people aged 50 and older have a higher chance of getting sick.
Mosquitos transmit the virus by biting humans and animals.
There have been several known positive mosquitoes with West Nile Virus in Butte County.
In Butte County, the West Nile Virus is most common in Aug. but can be active from June to Oct.
On July 30, California reported one death and four West Nile Virus infections. This does not include Butte County's infection.