APPENDIX IV–NATIONALLY NOTIFIABLE INFECTIOUS DISEASES IN 1069 THE UNITED STATES Appendix IV Nationally Notifiable Infectious Diseases in the United States Nationally notifiable infectious diseases are those that public health officials from local, state, and territorial public health departments voluntarily report to the Centers for Dis- ease Control and Prevention (CDC). Surveillance for nationally notifiable infectious dis- eases helps public health agencies monitor the occurrence and spread of disease across the nation and evaluate prevention and control measures, among other purposes. To ensure consistency in how the data are classified and enumerated, national surveillance case defi- nitions are established and used for each disease. The Council of State and Territorial Epidemiologists (CSTE), with advice from the CDC, reviews the list of nationally notifia- ble infectious diseases on an annual basis and may recommend that a disease be added or deleted from the list or that a case definition be revised. Provisional nationally notifiable infectious disease data are published weekly (for selected nationally notifiable diseases) and quarterly (for tuberculosis) in the Morbidity and Mortality Weekly Report (MMWR) data tables finalized data are published annually in the MMWR series “Summary of Notifiable Infec- tious Diseases and Conditions, United States.” The 2018 list of nationally notifiable infec- tious diseases is included in Table 1. Should a more current list of such diseases be need- ed, visit wwwn.cdc.gov/nndss/conditions/. Nationally notifiable infectious disease reports are based on data collected at the local, state, and territorial levels as a result of legislation and regulations in those jurisdictions that require health care providers, clinical laboratories, hospitals, and other entities to submit health-related data on reportable diseases to public health departments. Case re- porting to local, state, or territorial public health officials provides them the information needed to investigate these diseases and to implement prevention and control strategies, among other purposes. Because the list of reportable infectious diseases is determined by local, state, and territorial law and varies by jurisdiction, health care providers, clinical laboratories, hospitals, and other required reporters are strongly encouraged to obtain specific reporting requirements from the appropriate public health department, including the timeliness required for case reporting. If a reportable disease meets the criteria for a nationally notifiable infectious disease, the local, state, or territorial public health department will submit a case notification to the CDC. The timeliness of such notifications varies by disease, with some requiring noti- fication within 4 hours.
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