County of Los Angeles Public Health
- Registration page
- For questions: Phone: (833) 540-0473; Email: phwebmaster@ph.lacounty.gov
- Registration page
- For questions: Phone: (909) 387-3911; Email: coronavirus@DPH.sbcounty.gov
Orange County Health Care Agency
- Registration page – Othena vaccination management system
- For questions: Phone: (714) 834-2000, Email: support@compositeapps.net