West Nile virus activity is on the rise as Southland temperatures heat up this month.

The Greater Los Angeles County Vector Control District has confirmed another West Nile virus positive dead bird and nine additional West Nile positive mosquito samples, bringing the District’s total to 25 positive mosquito samples and 11 positive dead birds this year.

The latest bird was collected in Cerritos (zip code 90703). The nine mosquito pools were found in Newhall (91321), Encino (91436), Winnetka (91306), Woodland Hills (91367), Rowland Heights (91748), Norwalk (90650), Long Beach (90808), La Mirada (90638) and Whittier (90604).

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This is the first incidence of West Nile virus activity for Cerritos, Newhall and Norwalk for 2010. Statewide, 232 West Nile positive dead birds and 676 positive mosquito samples have been reported this year.

Mosquito bite prevention is key, because there is no cure for West Nile virus. Residents can follow the 3 D’s of West Nile virus prevention to protect themselves and their families:

• Dump/Drain: Eliminate standing water on your property because that’s where mosquitoes breed.
• Dusk/Dawn: Avoid outdoor activities when mosquitoes are most active.
• Defend: Wear CDC approved insect repellent and long-sleeve shirts and pants when outdoors. Use properly fitted and well maintained screens on windows and doors around your home.

Contact the Greater Los Angeles County Vector Control District at (562) 944-9656 or visit www.glacvcd.org to report a green pool or to submit a service request. For additional West Nile virus information, visit www.westnile.ca.gov or call 1-877-WNV BIRD to report a dead bird or squirrel.