The Stanislaus County Health Services Agency released a statement on Friday saying that the county's first human case of West Nile Virus has been diagnosed in woman. The 52-year-old woman diagnosed with the more serious neuroinvasive form of the virus.

Stanislaus County Health Services Agency Public Health Officer Dr. John Walker said in a statement that that woman has been diagnosed with the more serious neuroinvasive form of the virus. But he also said they are not aware if the woman had any preexisting medical conditions that may have contributed to her illness.

The first case of the West Nile Virus in Stanislaus County this year was detected in a dead bird found in Modesto. The tests showed that the bird tested positive for the virus, which marked the presence of the virus in the region earlier than previous years, the health officials said.

It has been said that that the first bird that tested positive for the virus in 2014, was not disclosed until June. The same year marked a period that saw the second highest number of human cases of the disease in the state since it first appeared in California in 2003.

As per official reports, the recorded numbers of human cases of the West Nile Virus in California in 2014 were 801.

According to California Department of Public Health, so far 18 confirmed case of the virus have been reported, which includes one fatality. The person who died was a senior citizen in Nevada County.

A total of 37 counties have confirmed West Nile Virus activity. The Turlock Mosquito Abatement District reported they have seen an increased level of adult mosquito activity in and near Turlock.