Most states require reporting certain infectious diseases. For the county of Riverside in CA, the following forms and links are helpful.
https://www.rivcoph.org/ContactUs.aspx (this site gives you the number of the Riverside Public Health Department. Call them if you have questions.
PDF form to fill and submit to Riverside county Infection Control Department
PDF Form for Reporting STIs to Riverside County. (on TimeofCare.com)
https://www.rivcohivaids.org/faqs/confidential-morbidity-report
https://www.rivco-diseasecontrol.org/Portals/0/documents/cmr_except_tb_dmv.pdf (on the RUHS side)