Wildflowers bloom in the Sierra Nevada
Wildflowers bloom in the Sierra Nevada

Sign up for the County's email subscription service


Lyme disease testing

The Vector-Borne Disease Prevention Program staff conducts testing for Lyme disease on ticks that are submitted by the public and other public agencies. The test results for 2002 - 2005 are tabulated as follows:

Lyme Disease Tick Test Results
Year Species Common Name Number Tested Number Positive Percent Positive
2002 Ixodes pacificus Western black-legged tick 691 8 1.2
2002 Ixodes scapularis Eastern black-legged tick 1 0 0.0
2003 Ixodes pacificus Western black-legged tick 749 18 2.4
2003 Dermacentor parumapertus Eastern black-legged tick 1 0 0.0
2004 Ixodes pacificus Western black-legged tick 2 0 0.0
2004 Dermacentor andersoni Rocky Mountain wood tick 1 0 0.0
2004 Dermacentor variabilis American dog tick 2 0 0.0
2005 Dermacentor occidentalis Pacific Coast tick 11 2 1.8
2005 Ixodes pacificus Western black-legged tick 207 6 2.9
2005 Dermacentor parumapertus Eastern black-legged tick 1 0 0.0

Note: Samples include submissions from other areas (e.g., California). No positive specimens have been recorded from Nevada to date.