West Nile Virus Update:
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West Nile virus is endemic in the Antelope Valley and the Antelope Valley Mosquito and Vector Control District continues to urge residents to take precautions against mosquito bites!
Recent Detections:
9/08/2025: The District detected West Nile virus in a mosquito sample collected from 25th Street East and Avenue K in Lancaster.
8/29/2025: The District detected West Nile virus in a mosquito sample collected from 13th Street East and Avenue R in Palmdale.
Press Release First WNV Positives in Palmdale 2025.docxPrior Detections:
7/20/2022: A Great Horned Owl found hear Avenue H and 30th Street East tested positive for West Nile virus. The owl was picked up by a veterinarian and is recovering at the Ojai Raptor Center.
6/14/2022: West Nile Virus was detected for the first time during the 2022 season near J-8 and 40th Street East
9/17/2021: The Los Angeles County Department of Public Health has identified the first case of human West Nile virus (WNV) infection in the Antelope Valley for the 2021 season.
10/06/2020: Two additional mosquito samples have tested positive for West Nile virus: 3oth East and Avenue R and 25th West and Avnue P-8. One additional human case has also been reported.
09/28/2020: An additional mosquito sample collected near 27th Street East and Avenue J-8 has tested positive for West Nile virus.
9/18/2020: Four additional human cases of West Nile virus, and one positive bird have been reported in the Antelope Valley area.
9/15/2020: The first two human cases of West Nile virus have been reported in the Antelope Valley area.
9/8/2020: An additional mosquito sample collected near 30th Street East and Palmdale Boulevard tested positive for West Nile virus.
8/31/2020: Three additional mosquito samples have tested positive for West Nile virus in Palmdale, CA near 6th Street East and Avenue R, 20th St East and Avenue S and 25th St. East and Avenue R-6
8/21/2020: Additonal mosquito samples tested positive for West Nile virus in Lancaster, CA near Avenue L-8 and 70th Street West,
8/17/2020: A third sample of mosquitoes has tested positive for West Nile virus in Lancaster, CA near Lancaster Boulevard and Division Street
8/10/2020: A second sample of mosquitoes has tested positive for West Nile virus in Palmdale, CA near 25th Street East and Avenue R-8.
7/30/2020: Based on mosquitoes tested from traps, West Nile virus has been detected in mosquitoes and birds near 15th Street West and Avenue K in Lancaster, California. This is the first West Nile virus detection within District boundaries for the 2020 mosquito season.