Officials say two women from Sutter County have died from the West Nile virus, raising the total number of deaths in California to six.
These are the first two deaths from the virus in Sutter County since 2012.
Details of the women have not been released.
The announcement comes a week after Sacramento County reported the death of a 74-year-old woman and another adult who died from the virus.
In Stanislaus County, two 65-year-old men also died.
The Mosquito and Vector Control District continues to make aerial sprayings over farmland, parks and golf courses.
Public health officials are urging people to take the proper precautions and guard themselves from mosquito bites by getting rid of stagnant water, using insect repellent and avoiding going out during dawn and dusk, because that is when mosquitoes are most active.