“…Legislation, regulations, or other rules in those jurisdictions require health care providers, hospitals, laboratories, and others to provide information on reportable conditions to public health authorities or their agents. The list of reportable conditions in each jurisdiction varies over time Although the sources of data for nationally notifiable infectious diseases and for nationally notifiable noninfectious conditions and disease outbreaks are the same (i.e., local, state, and territorial jurisdictions' data on reportable conditions) and have the same general purpose (i.e., monitoring and responding to the condition to improve population health), a number of differences should be considered when comparing findings across conditions and by time, location, and demographic characteristic (4)(5)(6)(7)(8)(9)(10)(11)(12)(13)(14). Under-reporting of noninfectious conditions and disease outbreaks to local and state health departments occurs, and the completeness of reporting, and therefore of notifications to CDC, varies by condition (4)(5)(6)(7)(8)(9)(10)(11)(12)(13)(14).…”