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Notice to Readers: NNDSS Tables Have Updated "N" Indicators for the Year 2009

The 2009 Council of State and Territorial Epidemiologists (CSTE) State Reportable Conditions Assessment (2009 SRCA) has collected data from 55 reporting jurisdictions (50 U.S. states, the District of Columbia, New York City, and three U.S. territories) to determine which of the nationally notifiable conditions (NNC) were reportable in each reporting jurisdiction during 2009. The 2009 SRCA gathered information regarding whether the condition is explicitly reportable (i.e., listed as a specific disease or as a category of diseases on reportable disease lists), whether a condition is implicitly reportable (i.e., included in a general category of the reportable disease list, such as "rare diseases of public health importance"), or not reportable within each jurisdiction. Only conditions that were explicitly reportable were considered reportable under 2009 SRCA methodology.

Results of the 2009 SRCA will be used to indicate whether each NNC is or is not reportable for the specified period and reporting jurisdiction. NNC that are not reportable are noted with an "N" indicator (for "not reportable") in the MMWR Table II weekly update (Provisional cases of selected notifiable diseases, United States) and in the MMWR Summary of Notifiable Diseases --- United States, 2009. This notation will allow readers to distinguish whether 1) no cases were reported even though the condition is reportable or 2) no cases were reported because the condition is not reportable.

The 2009 SRCA data collection and validation concluded in May 2010; results will be used to populate the "N" indicators for NNDSS data in both 2009 and 2010 MMWR data tables. The 2009 NNDSS data displayed in the MMWR weekly provisional tables will reflect reporting requirements gathered from the 2009 SRCA until 2010 SRCA official results are available.

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