The District can identify resident-submitted ticks but DOES
NOT perform disease testing on resident-submitted ticks.
Tick testing is performed by the San Mateo
County Public Health Laboratory.
The District laboratory conducts surveillance for tick-borne
pathogens at parks and open spaces throughout San Mateo County.
These results are available on the
Tick Surveillance page.
If you have found a tick on yourself or your pet and want to have
it identified, please take the following steps to preserve
your specimen for identification:
Do not kill the tick
Put the live tick in a plastic bag or container with a
piece of moist paper towel to provide humidity
Write down the location (street address, park name, or trail
name) where you think you got the tick
if the tick was attached to your skin, note approximately how
long it was attached
Although there are 21 species of hard ticks in San Mateo County, the list below are the most common ticks that people and pets contact in the environment.
There are 49 different species of ticks in California, but only a
few species transmit diseases to humans in California.
Ticks are divided into two groups: “hard ticks” (Ixodid ticks)
and “soft ticks” (Argasids). Most soft ticks live in the
nests of birds or wild animals like squirrels or rabbits. These
ticks feed exclusively on animal hosts and are rarely seen
by people.
