Tick Sites

It should be noted that only a few sites have been confirmed as positive. However, the species of tick, Western Black-Legged tick (Ixodes pacificus), that carries the bacterium for Lyme Disease has been found in other areas throughout the District. Western black-legged ticks have been found in 55 of 58 counties in California. On average, only about 1-2% of the adult Western Black-Legged ticks in California are infected with the bacterium that causes Lyme disease. In some areas north of the San Francisco Bay Area, up to 5% of the adult ticks and 14% of the nymphal ticks may be infected: this is still much lower than the northeastern U.S. where 30-60% or more of the adult ticks are infected.

Click on the map above to view sites where ticks carrying the bacterium that causes Lyme Disease have been found in the District.

Below are results for Western Black-legged ticks collected in our district and tested for bacteria that cause Lyme disease

DATE	COLLECTION LOCATION	RESULT
12/3/2003	Topanga State Park - Dead Horse Trail	Negative
12/4/2003	Will Rogers State Park - Betty Rogers Trail	Negative
12/16/2003	Rolling Hills - Bowie Trail	Negative
12/16/2003	Rolling Hills - Purple Canyon Trail	Negative
12/18/2003	Malibu Creek State Park - Mott Road	Negative
1/7/2004	Will Rogers State Park- Betty Rogers Trail	Positive
1/7/2004	Topanga State Park - Dead Horse Trail	Negative
1/15/2004	Rolling Hills - Bowie Trail	Negative
1/15/2004	Rolling Hills - Purple Canyon Trail	Negative
1/21/2004	Malibu Creek State Park - Mott Road	Negative
2/5/2004	Topanga State Park - Dead Horse Trail	Negative
2/5/2004	Will Rogers State Park- Betty Rogers Trail	Negative
2/11/2004	Rolling Hills - Bowie Trail	Negative
2/11/2004	Rolling Hills - Purple Canyon Trail	Negative
3/3/2004	Topanga State Park - Dead Horse Trail	Negative
3/4/2004	Malibu Creek State Park - Mott Road	Negative
3/11/2004	Will Rogers State Park - Betty Rogers Trail	Negative
3/18/2004	Rolling Hills - Bowie Trail	Negative
3/18/2004	Rolling Hills - Purple Canyon Trail	Negative
2/3/2005	Rolling Hills - Purple Canyon Trail	Positive
3/17/2005	Tapia State Park - Spur Trail	Positive
12/14/2005	Rolling Hills – Bowie Trail	Negative
12/14/2005	Rolling Hills – Purple Canyon Trail	Negative
1/12/2006	Rolling Hills Estates – George F. Canyon Trail	Negative
1/12/2006	Palos Verdes Estates – Bluff Cove	Negative
1/18/2006	Rolling Hills – Bowie Trail	Negative
1/18/2006	Rolling Hills – Purple Canyon Trail	Negative
1/19/2006	Charmlee Park – Botany Trail	Negative
1/19/2006	Tapia State Park – Spur Trail	Negative
1/26/2006	Palos Verdes Estates – Bluff Cove	Negative
1/26/2006	Rolling Hills Estates – George F. Canyon Trail	Negative
2/1/2006	Charmlee Park – Botany Trail	Negative
2/1/2006	Tapia State Park – Spur Trail	Negative
2/2/2006	Rolling Hills – Bowie Trail	Negative
2/2/2006	Rolling Hills – Purple Canyon Trail	Negative
2/15/2006	Charmlee Park – Botany Trail	Negative
2/15/2006	Tapia State Park – Spur Trail	Negative
2/16/2006	Rolling Hills – Upper Willow Springs Trail	Negative
2/16/2006	Rolling Hills – Lower Willow Springs Trail	Negative
3/2/2006	Charmlee Park – Botany Trail	Negative
3/2/2006	Tapia State Park – Spur Trail	Negative
3/9/2006	Rolling Hills Estates – George F. Canyon Trail	Negative
3/9/2006	Rolling Hills – Johns Canyon Trail	Negative
3/16/2006	Tapia State Park – Spur Trail	Negative
3/31/2006	Charmlee Park – Botany Trail	Negative
3/31/2006	Tapia State Park – Spur Trail	Negative
1/29/2007	Tapia State Park – Spur Trail	Negative
2/1/2007	Rolling Hills – Bowie Trail	Negative
2/1/2007	Rolling Hills – Purple Canyon	Negative
2/14/2007	Topanga State Park – Musch Trail	Negative
2/14/2007	Topanga State Park – Dead Horse Trail	Negative
2/15/2007	Malibu Creek State Park – Mott Road	Negative
12/13/2007	Malibu Creek State Park – Mott Road	Negative
12/13/2007	Tapia State Park – Spur Trail	Negative
1/3/2008	Topanga State Park – Musch Trail	Negative
1/3/2008	Charmlee Park – Botany Trail	Negative
1/29/2008	Will Rogers State Park – Betty Rogers Trail	Negative
1/31/2008	Rolling Hills – Purple Canyon Trail	Negative
2/1/2008	Tapia State Park – Spur Trail	Negative
2/1/2008	Malibu Creek State Park – Mott Road	Negative
2/7/2008	Charmlee Park – Botany Trail	Negative
2/7/2008	Topanga State Park – Musch Trail	Negative
2/8/2008	Will Rogers State Park – Betty Rogers Trail	Negative
2/19/2008	Rolling Hills Estates – George F. Canyon Trail	Negative
11/17/08	Rolling Hills - Purple Canyon Trail	Negative
11/17/08	Rolling Hills - Bowie Trail	Negative
11/18/08	Charmlee Park - Botany Trail	Negative
11/18/08	Charmlee Park - Western End Trail	Negative
11/19/08	Topanga State Park - Dead Horse Trail	Negative
11/19/08	Topanga State Park - Musch Trail	Negative
11/20/08	Rolling Hills - Upper Willow Springs Trail	Negative
11/20/08	Rolling Hills - Lower Willow Springs Trail	Negative
11/21/08	Rolling Hills - Bowie Trail	Negative
11/21/08	Rolling Hills - Purple Canyon Trail	Negative
11/24/08	Charmlee Park - Botany Trail	Negative
11/24/08	Charmlee Park - Western End Trail	Negative
11/25/08	Topanga State Park - Musch Trail	Negative
11/25/08	Topanga State Park - Dead Horse Trail	Negative
12/01/08	Rolling Hills - Lower Willow Springs Trail	Negative
12/01/08	Rolling Hills - Upper Willow Springs Trail	Negative
12/02/08	Palos Verdes Estates - Bluff Cove	Negative
12/02/08	Rolling Hills Estates - George F. Canyon	Negative
12/03/08	Rancho Palos Verdes - Forrestal Reserve - Quarry Trail	Negative
12/03/08	Rancho Palos Verdes - Forrestal Reserve - Pirate Trail	Negative
12/03/08	White Point Preserve - Grassland Loop	Negative
12/03/08	White Point Preserve - Vista Trail	Negative
12/04/08	Tapia State Park - Lower End Trail	Negative
12/04/08	Tapia State Park - Spur Trail	Negative
12/04/08	Malibu Creek State Park - Mott Road Trail	Negative
12/04/08	Malibu Creek State Park - Chaparral Trail	Negative
12/05/08	Rolling Hills - Purple Canyon Trail	Negative
12/05/08	Rolling Hills - Bowie Trail	Negative
12/08/08	Charmlee Park - Botany Trail	Negative
12/08/08	Charmlee Park - Western End Trail	Negative
12/09/08	Topanga State Park - Dead Horse Trail	Negative
12/09/08	Topanga State Park - Musch Trail	Negative
12/10/08	Rolling Hills - Lower Willow Springs Trail	Negative
12/10/08	Rolling Hills - Upper Willow Springs Trail	Negative
12/12/08	Palos Verdes Estates - Bluff Cove	Negative
12/12/08	Rolling Hills Estates - George F. Canyon	Negative
12/19/08	White Point Preserve - Vista Trail	Negative
01/07/09	Sullivan Canyon Park - Flood Canyon Trail	Negative
01/07/09	Sullivan Canyon Park - Canyon Trail	Negative
01/07/09	Will Rogers State Park - Backbone Trail	Negative
01/08/09	Will Rogers State Park - Betty Rogers Trail	Negative
01/14/09	White Point Preserve - Vista Trail	Negative
01/14/09	Franklin Canyon Park - Ranch Trail	Negative
01/19/09	Charmlee Park - Western End Trail	Negative
01/19/09	Charmlee Park - Western End Trail	Negative
01/20/09	Malibu Creek State Park - Chaparral Trail	Negative
01/20/09	Malibu Creek State Park - Mott Road Trail	Negative
01/21/09	Tapia State Park - Lower End Trail	Negative
01/21/09	Tapia State Park - Spur Trail	Negative
01/21/09	Sullivan Canyon Park - Flood Control Trail	Negative
01/21/09	Sullivan Canyon Park - Canyon Trail	Negative
01/26/09	Topanga State Park - Musch Trail	Negative
01/26/09	Topanga State Park - Dead Horse Trail	Negative
01/27/09	Will Rogers State Park - Betty Rogers Trail	Negative
01/27/09	Will Rogers State Park - Backbone Trail	Negative
01/27/09	Rolling Hills Estates - George F. Canyon	Negative
1/28/2009	Sullivan Canyon Park - Flood Control Trail	Negative
1/28/2009	Sullivan Canyon Park - Canyon Trail	Negative
1/28/2009	White Point Preserve - Vista Trail	Negative
1/28/2009	Charmlee Park - Botany Trail	Negative
1/29/2009	Palos Verdes Estates - Bluff Cove	Negative
1/29/2009	Malibu Creek State Park - Mott Road Trail	Negative
1/29/2009	Malibu Creek State Park - Chaparral Trail	Negative
1/29/2009	Franklin Canyon Park - Ranch Trail	Negative
1/29/2009	Franklin Canyon Park - Hastain Trail	Negative
1/30/2009	Rolling Hills - Bowie Trail	Negative
1/30/2009	Rolling Hills - Purple Canyon Trail	Negative
2/2/2009	Rolling Hills - Lower Willow Springs Trail	Negative
2/2/2009	Rolling Hills - Upper Willow Springs Trail	Negative
2/4/2009	Tapia State Park - Spur Trail	Negative
2/4/2009	Tapia State Park - Lower End Trail	Negative
2/4/2009	White Point Preserve - Vista Trail	Negative
2/10/2009	Charmlee Park - Western End Trail	Negative
2/10/2009	Charmlee Park - Botany Trail	Negative
2/11/2009	Malibu Creek State Park - Mott Road Trail	Negative
2/11/2009	Palos Verdes Estates - Bluff Cove	Negative
2/11/2009	Malibu Creek State Park - Chaparral Trail	Negative
2/12/2009	Tapia State Park - Lower End Trail	Negative
2/12/2009	Tapia State Park - Spur Trail	Negative
2/12/2009	Rolling Hills - Upper Willow Springs Trail	Negative
2/12/2009	Rolling Hills - Lower Willow Springs Trail	Negative
2/18/2009	Topanga State Park - Dead Horse Trail	Negative
02/18/09	Topanga State Park - Musch Trail	Negative
02/19/09	Malibu Creek State Park - Mott Road Trail	Negative
02/19/09	Malibu Creek State Park - Chaparral Trail	Negative
02/20/09	Will Rogers State Park - Backbone Trail	Negative
02/20/09	Will Rogers State Park - Betty Rogers Trail	Negative
2/23/2009	Sullivan Canyon Park - Flood Control Trail	Negative
2/23/2009	Sullivan Canyon Park - Canyon Trail	Negative
2/24/2009	Franklin Canyon Park - Ranch Trail	Negative
2/25/2009	Rolling Hills - Purple Canyon Trail	Negative
2/25/2009	Rolling Hills - Bowie Trail	Negative
2/25/2009	Palos Verdes Estates - Bluff Cove	Negative
2/25/2009	Charmlee Park - Botany Trail	Negative
2/26/2009	Rolling Hills - Upper Willow Springs Trail	Negative
2/26/2009	Rolling Hills - Lower Willow Springs Trail	Negative
2/26/2009	Charmlee Park - Western End Trail	Negative
2/26/2009	Tapia State Park - Spur Trail	Negative
3/2/2009	White Point Preserve - Vista Trail	Negative
3/3/2009	Charmlee Park - Botany Trail	Negative
03/03/09	Charmlee Park - Western End Trail	Negative
03/04/09	Malibu Creek State Park - Mott Road Trail	Negative
03/04/09	Malibu Creek State Park - Chaparral Trail	Negative
03/05/09	Tapia State Park - Lower End Trail	Negative
03/05/09	Tapia State Park - Spur Trail	Negative
3/6/2009	Topanga State Park - Musch Trail	Negative
3/6/2009	Topanga State Park - Dead Horse Trail	Negative
3/9/2009	Will Rogers State Park - Betty Rogers Trail	Negative
3/9/2009	Will Rogers State Park - Backbone Trail	Negative
3/10/2009	Sullivan Canyon Park - Flood Control Trail	Negative
3/10/2009	Sullivan Canyon Park - Canyon Trail	Negative
3/11/2009	Franklin Canyon Park - Ranch Trail	Negative
3/11/2009	Franklin Canyon Park - Hastain Trail	Negative
3/12/2009	Palos Verdes Estates - Bluff Cove	Negative
3/12/2009	Rolling Hills Estates - George F. Canyon	Negative
3/13/2009	Rolling Hills - Purple Canyon Trail	Negative
3/16/2009	Rolling Hills - Upper Willow Springs Trail	Negative
3/16/2009	Rolling Hills - Lower Willow Springs Trail	Negative
3/19/2009	R.P.V - Miraleste Canyon- North Canyon Trail	Negative
3/19/2009	R.P.V - Miraleste Canyon- South Canyon Trail	Negative
3/20/2009	Palos Verdes Estates - Bluff Cove	Negative
3/20/2009	Rolling Hills Estates - George F. Canyon	Negative
3/24/2009	Rolling Hills - Purple Canyon Trail	Negative
3/27/2009	Rolling Hills - Lower Willow Springs Trail	Negative
3/27/2009	Rolling Hills - Upper Willow Springs Trail	Negative
3/31/2009	Miraleste Canyon - South Canyon Trail	Negative
4/3/2009	Abalone Cove Reserve - Portuguese Point Loop Trail	Negative
4/3/2009	Charmlee Park - Botany Trail	Negative
4/3/2009	Charmlee Park - Western End Trail	Negative
4/7/2009	Malibu Creek State Park - Chaparral Trail	Negative
4/7/2009	Malibu Creek State Park - Mott Road Trail	Negative
04/08/09	Miraleste Canyon- South Canyon Trail	Negative
04/13/09	Will Rogers State Park - Backbone Trail	Negative
04/13/09	Will Rogers State Park - Betty Rogers Trail	Negative
04/14/09	Malibu Creek State Park - Mott Road Trail	Negative
04/14/09	Malibu Creek State Park - Chaparral Trail	Negative
04/15/09	Tapia State Park - Spur Trail	Negative
04/15/09	Tapia State Park - Lower End Trail	Negative
04/16/09	Topanga State Park - Dead Horse Trail	Negative
04/16/09	Topanga State Park - Musch Trail	Negative
04/17/09	Rolling Hills - Purple Canyon Trail	Negative

Los Angeles County West Vector & Vector-Borne Disease Control District

Locations of Lyme Positive Ticks

Below are results for Western Black-legged ticks collected in our district and tested for bacteria that cause Lyme disease