Dallas County on Sunday resumed mosquito repellents spraying from the air, after stormy skies and bad weather forced the authorities to suspend spraying operations on Friday and Saturday.

Health officials have already confirmed around 150 cases of West Nile Virus. Eight of the infected people have lost their lives due to the illness, which prompted the county’s authorities to approve to aerial sprays against mosquitoes.

On Sunday, four planes lifted off from Dallas Executive Airport and sprayed mosquito repellents over more than 250,000 acres of the county, including all or parts of cities like Addison, Coppell, Carrollton, Dallas, Garland, Farmers Branch, Grand Prairie, and Richardson.

Dallas County Judge Clay Jenkins described weather conditions as calm and clear.

Speaking about the aerial spraying, Jenkins said, “It's an incredible sense of relief for me to see this good weather and I know that when families wake up tomorrow, they'll be safer because of it.”

The campaign concluded at round 2:30 a. m. on Monday. Additional spraying will be conducted on Monday night using a fifth aircraft.

The symptoms of West Nile Virus infection, which spreads by infected mosquitoes, include headache, nausea, disorientation, lack of appetite, vomiting, and high fever.