TARRANT COUNTY (CBSDFW.COM) — Tarrant County health officials have confirmed positive mosquito samples for West Nile.

Photo shows an Asian tiger mosquito being studied. (credit: Remko de Waal/AFP/Getty Images)

Officials said that the positive sample was found in Colleyville but no human cases have been reported this year.

The health department advises residents should routinely dump standing water on their property, use EPA-approved insect repellent and dress in long sleeves and pants.