After this dog license tax has been established in a county or city, it shall be continued in force until an order has been issued by the department declaring that county, or the portion of that county as may be deemed advisable, to be free from rabies or further danger of its spread.
Source:
Section 121655, https://leginfo.legislature.ca.gov/faces/codes_displaySection.xhtml?lawCode=HSC§ionNum=121655..