A 71-year-old man who recently traveled to rural Colorado tested positive for West Nile Virus, registering as San Diego County’s first human case since 2022, according to a statement from the county health department released Thursday afternoon. The case, even if it did not originate in San Diego County, is a reminder of the risk that mosquito bites can carry if they draw blood from humans after encountering an infected bird. Earlier this month, a county testing program detected West Nile in a dead bird found in Clairemont. Though people who become infected do not show symptoms, about 20 percent will experience headache, nausea, fatigue, skin rash or swollen glands. Infections are rarely fatal, with one death per 150 infections, according to the health department. Eliminating hidden mosquito breeding locations and avoiding mosquito bites when outdoors are the main ways of reducing personal risk of contracting the disease. To report mosquito activity or locations such as green swimming pools that need mosquito abatement, the public can call the county’s Vector Control Program at (858) 694-2888 or email [email protected]. The county health department’s tuberculosis program also warned current and former residents and employees of The Cove at La Jolla Post-Acute Care Center Thursday afternoon of potential exposure from Feb. 17 through Sept. 16. Health officials noted that the exposure involved a drug-resistant type of tuberculosis, warning the public to be on the lookout for symptoms such as persistent cough, fever, night sweats and unexplained weight loss. Further guidance is available by calling the program at (619) 692-8621.