1912 to present
Mode of Collection
Abstraction of records for all case reports of notifiable diseases received by participating state and territorial health departments.
The National Notifiable Disease Surveillance System (NNDSS) is a nationwide collaboration that enables all levels of public health (local, state, territorial, federal, and international) to share health information to monitor, control, and prevent the occurrence and spread of state-reportable and nationally notifiable infectious and some noninfectious diseases and conditions. NNDSS is a multifaceted program that includes the surveillance system for collection, analysis, and sharing of health data, resources, and information about policies and standards at the local, state, and national levels. NNDSS provides weekly provisional and annual finalized information on the occurrence of diseases defined as notifiable by the Council of State and Territorial Epidemiologists (CSTE). Data include cases of nationally notifiable conditions, which are reported using uniform surveillance case definitions.
Notifiable disease reports are received from health departments in the 50 states, the District of Columbia, New York City, and 5 territories (American Samoa, Guam, Northern Mariana Islands, Puerto Rico, U.S. Virgin Islands).