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Notice to Readers: Changes in National Notifiable Diseases List and Data Presentation

This issue of MMWR incorporates modifications to Tables I, II, and III, Cases of Notifiable Diseases, United States. This year, the modifications add diseases designated nationally notifiable by the Council of State and Territorial Epidemiologists (CSTE), in conjunction with CDC, and standardize the data presentation rules. Table IV, Deaths in 122 U.S. Cities, is referenced as Table III. As of January 1, 2002, three diseases have been added to the list of nationally notifiable diseases (Table 1). Except where indicated, National Notifiable Diseases Surveillance System (NNDSS) data presented in the notifiable disease tables are transmitted to CDC through the National Electronic Telecommunications System for Surveillance (NETSS). Additional information about nationally notifiable diseases, NNDSS, NETSS, and CSTE is available at and

Modifications to Table I

Provisional incidence data for diseases with annual incidence of <300 cases in the United States or diseases that are designated as notifiable in <25 states are presented in Table I. An additional column has been added to Table I to display cumulative, year-to-date, disease case counts for the preceding year.

Modifications to Table II and Table III

Provisional incidence data for diseases with annual incidence of >300 cases in the United States and diseases that are designated as notifiable in >25 states are presented in Table II. For clarity of notifiable disease data presentation, if any distinct manifestation of a disease meets the Table II criteria, all distinct disease conditions related to Table II-eligible diseases will be included in Table II. Public Health Laboratory Information System (PHLIS) data for Escherichia coli O157:H7, salmonellosis, and shigellosis have been removed from Table II. Variable reporting criteria (e.g., case definitions) between NNDSS and PHLIS limit the meaningful comparison of these data. Vaccine-preventable diseases (VPDs) that are preventable through routine vaccination, have an annual incidence of >50 cases, and can be transmitted from human-to-human have been moved from Table III to Table II. VPDs that remain in Table I will be monitored yearly for changes in disease incidence. In addition, total incidence data for measles are published in Table II with a footnote specifying the total number of indigenous and imported cases.

Table 1

Table 1
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