The Yolo County Health and Human Services Agency’s Communicable Disease Program confirmed the first human case of West Nile virus in Yolo County in 2023 Friday evening.

According to a Yolo County press release, the patient, who is a resident of Woodland, fell ill during the first week of August. This incident underscores the need for continued vigilance and proactive measures to mitigate the spread of this mosquito-borne illness.

“Most people who become infected do not get sick, and the risk of serious illness to most individuals is low. However, about one percent of individuals can develop a serious neurologic illness,” stated Yolo County’s Deputy Public Health Officer Dr. Mary Ann Limbos. “We commend the dedicated efforts of the Sacramento-Yolo Mosquito & Vector Control District and their ongoing work in reducing mosquito populations to safeguard our community’s well-being.

“Residents can play a crucial role in preventing West Nile virus by regularly inspecting their yards and eliminating standing water, a breeding ground for mosquitoes,” Limbos continued. “Employing precautions such as wearing protective clothing and using insect repellents containing DEET significantly reduces the risk of mosquito bites.”

Even as summer wanes, favorable weather conditions are sustaining mosquito habitats.

West Nile virus symptoms typically manifest between two to 14 days following exposure to infected mosquitoes. Although the majority of individuals may not exhibit symptoms, up to 20 percent may experience fever, headache, body aches, nausea, vomiting, and other discomforts. While most cases resolve within a few days to weeks, serious neurologic effects can occur, making it imperative to remain vigilant.

To mitigate the risk of West Nile virus infection, the Sacramento-Yolo Mosquito & Vector Control District recommends following the 7 D’s to reduce mosquito exposure:

DRAIN any stagnant water to eliminate mosquito breeding sites.

DAWN and DUSK, when mosquitoes are most active, are times to limit outdoor activities.

DRESS in long sleeves and pants when outdoors.

DEFEND against mosquitoes by using effective insect repellents containing DEET, Picaridin, or Oil of Lemon Eucalyptus.

Ensure DOOR and window screens are intact to prevent mosquitoes from entering homes.

For assistance, contact the DISTRICT at 1-800-429-1022 to address mosquito concerns.

The Sacramento-Yolo Mosquito & Vector Control District has been diligently implementing comprehensive control measures to reduce mosquito populations in Yolo County, minimizing the risk of disease transmission.

To access additional resources, visit their website at www.fightthebite.net or call 1-800-429-1022. For more information about California’s West Nile Virus data and statistics, please visit westnile.ca.gov.