Among their duties, the California Department of Health (CDPH) investigates breaches. In this case, they had one of their own to report. In a letter dated September 26, they write:
We are writing to you because the California Department of Public Health, Center for Family Health, Women, Infants, and Children (WIC) Program experienced a security incident involving your personal and medical information.
On August 20, 2013, a contracted Madera County WIC employee mistakenly gave WIC paper records about you to another participant. Upon discovering the mistake, the participant immediately notified the Madera County WIC office and returned your records.
The information was limited to your name and medical information (in the form of the expected date of delivery of your child), and did not contain any other medical or personal information, such as a Social Security number, Driver’s License number, or financial account numbers which could expose you to identity theft. Nonetheless, we felt it necessary to inform you since your personal information was involved.
Read the full letter on the California Attorney General‘s web site.