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National Notifiable Infectious Diseases and Conditions

Notice To Data Users
2019, January The following changes were made to the weekly 2019 tables of nationally notifiable infectious diseases and conditions:
  • The previous Table 1 format (which displayed infrequently reported notifiable diseases) was retired and data for all conditions in that table (except for diphtheria) are displayed using the weekly Table 2 format. Table 2 was renamed to Table 1.
  • The 2019 NNDSS data in the new Table 1 are stratified by US Residents, excluding US Territories; US Territories; and non-U.S. Residents; based upon the reported 'country of usual residence' for the case. This stratification is not applied to the 2018 NNDSS data in the 2019 table.
  • The previous 52 week median statistic is no longer displayed, but the previous 52 week maximum and cumulative year-to-date counts are retained.
  • Changes to the new Table 1 as a result of approved 2018 Council of State and Territorial Epidemiologists position statements include the following:
    • 'Candida auris, clinical cases' was added as a new nationally notifiable disease.
    • Salmonella Paratyphi infection and Salmonella Typhi infection replaced Paratyphoid fever and Typhoid fever, respectively.
    • Salmonellosis (excluding S. Typhi infection and S. Paratyphi infection) replaced Salmonellosis (excluding paratyphoid fever and typhoid fever).
    • Carbapenemase-producing carbapenem-resistant Enterobacteriaceae (CP-CRE) represents a consolidation of CP-CRE species Klebsiella spp, CP-CRE E. coli, and CP-CRE Enterobacter spp.
  • The quarterly Tuberculosis Table 3 was renamed Table 2.
Figure 1 only includes data among US residents (and therefore excludes data among US territories and non-US residents).
2018, January Beginning with the 2018 NNDSS data, there are a number of changes to the NNDSS display of weekly data.
  • Non-congenital Zika virus disease was removed from Table I and added to Table 2.
  • Paratyphoid fever was added to Table 1. Prior to 2018, cases of paratyphoid fever were included with salmonellosis cases in Table 2.
  • With the removal of paratyphoid fever cases from the salmonellosis case counts in 2018, salmonellosis was replaced with "salmonellosis (excluding paratyphoid fever and typhoid fever)" in Table 2. To obtain data that are comparable to previous years (2017 and earlier), you will need to sum the paratyphoid case count with the "salmonellosis (excluding paratyphoid fever and typhoid fever)" cases count.
  • Carbapenemase Producing Carbapenem-Resistant Enterobacteriaceae (CP-CRE), due to Klebsiella spp, Escherichia coli, and Enterobacter spp. were added to Table 2.
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