Pesticide spraying set for July 14 and 15 in more La Mesa neighborhoods

By Miriam Raftery

July 11, 2025 (La Mesa) – Concern over West Nile virus in the La Mesa and Rolando areas has ramped up, after County Vector control tested nearly 2,000 mosquitos in 165 batches in these areas.

West Nile virus found in 37 batches of mosquitos tested in Roland and La Mesa

 “In this area, 37 batches have tested positive for West Nilie virus, Gig Conaughton, communication specialist for San Diego County, told East County Magazine.

The positive tests were in La Mesa and the San Diego portion of Rolando.

Mosquitos were also tested in Lemon Grove, with no West Nile virus detected there.

Spraying dates and locations

Pesticide spraying will be done Monday and Tuesday, July 14 and 15, between 1 a.m. and 6 a.m.in the La Mesa areas shown on the map at left and at the County's Adult Mosquito Control site.