The Infectious Diseases Branch (IDB) Surveillance and Statistics Section (SSS) collects, processes, analyzes, and disseminates data from local health jurisdictions around the State on over 60 reportable communicable diseases followed by the Infectious Diseases Branch. IDB-SSS also maintains a typhoid carrier registry. 

The goals of IDB-SSS are to conduct and coordinate statewide surveillance of reported communicable diseases in California, maintain a high level of data accuracy and quality, manage and analyze surveillance data to monitor disease burden and to assist in the development of public health policies, and conduct research related to surveillance of communicable diseases.