BEIJING, July 14 (Xinhuanet) -- High mosquito numbers have been found throughout areas of Yolo County, Yolo Mosquito and Vector Control District in Sacramento, California, announced, according to media reports Monday.

    District officials are concerned over smoke filled skies that have prevented aerial treatments over agricultural areas to kill adult mosquitoes.

    "Planes have not been able to treat for two weeks now," said David Brown, District Manager. "As a result, we are starting to see mosquitoes move into the urban areas and we want residents to be aware."

    Although no West Nile virus activity has been registered in the county, the District would like to remind the public to remain indoors while bad air quality persists and take proper precautions against mosquitoes, officials added.

    "If residents are going to be out during dawn and dusk when there's high mosquito activity, it's important they wear long sleeves and pants or put on an effective repellent to avoid being bitten" said Brown.

    Currently, District officials are considering aerial treatments over high risk areas in South Sacramento depending on air quality and weather conditions.

    (Agencies)