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

Locations of Lyme Positive Ticks 

    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

 

INFORMATION OR SERVICE REQUEST

BACK HOME NEXT

Send mail to rsaviskas@lawestvector.org with questions or comments about this web site.