The California Lyme Disease Association (CALDA) was originally founded as the Lyme Disease Resource Center in 1990 as a nonprofit education and communications center that acts as a central voice for all tick-borne disease issues in California and a supporting voice for national issues. Through advocacy and education of the public and health care professionals, CALDA seeks to prevent tick-borne diseases, encourage early diagnosis, and improve the quality of health care provided to those with tick-borne diseases.