Notice: Improvements in data processing at CDC were applied to 2020 and 2021 data beginning with the tables published for week 47. Case count changes between tables published for week 46 and week 47 may be due to changes in data processing rules and not due to changes in disease levels.

Nationally Notifiable Infectious Diseases and Conditions, United States: Weekly Tables

TABLE 1ee. Weekly cases* of notifiable diseases, United States, U.S. Territories, and Non-U.S. Residents week ending December 4, 2021 (Week 48)
Reporting Area Salmonella Paratyphi infection § Salmonella Typhi infection ¶ Salmonellosis (excluding Salmonella Typhi infection and Salmonella Paratyphi infection) **
Current weekPrevious 52 weeks Max †Cum YTD 2021 †Cum YTD 2020 †Current weekPrevious 52 weeks Max †Cum YTD 2021 †Cum YTD 2020 †Current weekPrevious 52 weeks Max †Cum YTD 2021 †Cum YTD 2020 †
U.S. Residents, excluding U.S. Territories - 4 49 72 - 15 132 161 292 1,674 34,347 39,981
New England - 2 6 5 - 2 10 7 6 83 1,636 1,463
Connecticut - 2 3 2 - 2 6 3 - 19 350 335
Maine - 0 - - - 0 - - - 10 124 102
Massachusetts - 2 3 3 - 1 4 4 4 45 866 703
New Hampshire - 0 - - - 1 - - - 10 118 143
Rhode Island - 0 - - - 0 - - 2 8 122 105
Vermont - 0 - - - 0 - - - 5 56 75
Middle Atlantic - 1 10 9 - 3 25 44 40 132 3,516 4,244
New Jersey - 0 - - - 0 - 8 - 21 16 1,001
New York (excluding New York City) - 1 5 3 - 3 8 5 18 59 1,176 1,090
New York City - 1 3 5 - 2 10 20 11 52 1,076 873
Pennsylvania - 1 2 1 - 1 7 11 11 52 1,248 1,280
East North Central - 2 5 15 - 2 11 10 4 174 3,647 4,548
Illinois - 1 3 11 - 2 7 5 - 119 1,582 1,274
Indiana - 0 - - - 0 - 1 - 13 81 638
Michigan - 0 - 3 - 0 - 1 - 9 24 869
Ohio - 1 2 - - 2 4 3 - 43 1,127 1,102
Wisconsin - 0 - 1 - 0 - - 4 40 833 665
West North Central - 1 2 4 - 1 4 5 16 63 1,773 2,947
Iowa - 1 1 3 - 0 - - 1 32 610 569
Kansas - 0 - - - 1 2 - 2 21 360 452
Minnesota - 0 - 1 - 1 - 2 - 11 - 669
Missouri - 0 - - - 1 - 3 - 16 192 747
Nebraska - 1 1 - - 1 2 - 13 19 331 254
North Dakota - 0 - - - 0 - - - 5 81 86
South Dakota - 0 - - - 0 - - - 14 199 170
South Atlantic - 1 6 7 - 2 25 26 57 409 11,182 13,717
Delaware - 0 - 1 - 1 3 1 - 12 166 182
District of Columbia - 0 - - - 0 - 2 - 2 10 32
Florida - 1 2 1 - 1 4 2 25 273 5,075 5,904
Georgia - 0 - - - 0 - 1 4 78 1,647 1,954
Maryland - 1 2 3 - 1 11 6 5 40 700 663
North Carolina - 0 - - - 1 1 4 - 66 1,027 2,229
South Carolina - 0 - - - 1 1 2 10 76 1,426 1,615
Virginia - 1 2 2 - 2 5 8 13 49 1,055 895
West Virginia - 0 - - - 0 - - - 6 76 243
East South Central - 1 2 3 - 3 9 2 17 98 2,195 2,220
Alabama - 1 1 2 - 3 7 - 7 38 798 821
Kentucky - 0 - - - 1 1 1 - 25 391 617
Mississippi - 0 - - - 0 - - - 21 207 -
Tennessee - 1 1 1 - 1 1 1 10 36 799 782
West South Central - 1 2 5 - 2 8 10 74 363 4,309 4,617
Arkansas - 1 1 - - 1 1 1 10 27 486 393
Louisiana - 1 1 1 - 0 - - 25 51 767 1,204
Oklahoma - 0 - - - 1 1 2 20 77 748 726
Texas - 0 - 4 - 2 6 7 19 280 2,308 2,294
Mountain - 2 6 5 - 2 13 6 36 88 2,572 2,260
Arizona - 0 - 2 - 2 7 3 26 32 820 593
Colorado - 0 - 1 - 1 2 3 6 40 894 556
Idaho - 1 5 - - 0 - - - 6 73 197
Montana - 0 - - - 0 - - - 6 68 185
Nevada - 0 - 2 - 1 1 - - 4 51 50
New Mexico - 0 - - - 1 2 - 2 15 294 241
Utah - 1 1 - - 1 1 - 2 22 303 338
Wyoming - 0 - - - 0 - - - 8 69 100
Pacific - 2 10 19 - 11 27 51 42 743 3,517 3,965
Alaska - 1 1 2 - 0 - - - 2 16 54
California - 2 5 17 - 4 26 49 31 99 2,548 3,344
Hawaii - 1 3 - - 1 - 1 1 8 96 121
Oregon - 0 - - - 0 - 1 4 12 295 446
Washington - 2 1 - - 10 1 - 6 703 562 -
U.S. Territories - 3 7 1 - 2 3 - - 30 296 304
American Samoa - 0 - - - 0 - - - 0 - -
Commonwealth of Northern Mariana Islands - 2 4 - - 0 - - - 1 2 3
Guam - 3 3 1 - 2 3 - - 2 9 4
Puerto Rico - 0 - - - 0 - - - 30 282 294
U.S. Virgin Islands - 0 - - - 0 - - - 1 3 3
Non-U.S. Residents - 0 - - - 0 - - - 2 2 2
Total - 7 56 73 - 15 135 161 292 1,674 34,645 40,287
  • U: Unavailable — The reporting jurisdiction was unable to send the data to CDC or CDC was unable to process the data.
  • -: No reported cases — The reporting jurisdiction did not submit any cases to CDC.
  • N: Not reportable — The disease or condition was not reportable by law, statute, or regulation in the reporting jurisdiction.
  • NN: Not nationally notifiable — This condition was not designated as being nationally notifiable.
  • NP: Nationally notifiable but not published.
  • NC: Not calculated — There is insufficient data available to support the calculation of this statistic.
  • Cum: Cumulative year-to-date counts.
  • Max: Maximum — Maximum case count during the previous 52 weeks.
  • * Case counts for reporting year 2021 are provisional and subject to change. Cases are assigned to the reporting jurisdiction submitting the case to NNDSS, if the case's country of usual residence is the U.S., a U.S. territory, unknown, or null (i.e. country not reported); otherwise, the case is assigned to the 'Non-U.S. Residents' category. Country of usual residence is currently not reported by all jurisdictions or for all conditions. For further information on interpretation of these data, see https://www.cdc.gov/nndss/docs/Readers-Guide-WONDER-Tables-20210421-508.pdf.
  • †Previous 52 week maximum and cumulative YTD are determined from periods of time when the condition was reportable in the jurisdiction (i.e., may be less than 52 weeks of data or incomplete YTD data).
  • § In previous years, cases were reported as Salmonellosis. Beginning in January 2019, cases began to be reported as Salmonella Paratyphi infection.
  • ¶ In previous years, cases were reported as typhoid fever. Beginning in January 2019, cases began to be reported as Salmonella Typhi infection.
  • ** In previous years, cases were reported as Salmonellosis (excluding paratyphoid fever and typhoid fever). Beginning in January 2019, cases began to be reported as Salmonellosis (excluding Salmonella Typhi infection and Salmonella Paratyphi infection).
Notes:
  • These are weekly cases of selected infectious national notifiable diseases, from the National Notifiable Diseases Surveillance System (NNDSS). NNDSS data reported by the 50 states, New York City, the District of Columbia, and the U.S. territories are collated and published weekly as numbered tables. Cases reported by state health departments to CDC for weekly publication are subject to ongoing revision of information and delayed reporting. Therefore, numbers listed in later weeks may reflect changes made to these counts as additional information becomes available. Case counts in the tables are presented as published each week. See also Guide to Interpreting Provisional and Finalized NNDSS Data.
  • Weekly tables since 1996 are available on CDC WONDER.
  • Weekly tables since 2014 are available on Data.CDC.gov.
  • Weekly tables for 1952–2017 published in the Morbidity and Mortality Weekly Reports (MMWR) are available at CDC Stacks MMWR, and weekly tables starting in 2018 are available at CDC Stacks NNDSS (once in CDC Stacks NNDSS select "Weekly Tables" in the "Genre" box at the left).
  • Notices, errata, and other notes are available in the Notice To Data Users page.
  • The list of national notifiable infectious diseases and conditions and their national surveillance case definitions are available at https://ndc.services.cdc.gov/. This list incorporates the Council of State and Territorial Epidemiologists (CSTE) position statements approved by CSTE for national surveillance.
Suggested Citation:
  • Centers for Disease Control and Prevention. National Notifiable Diseases Surveillance System, Weekly Tables of Infectious Disease Data. Atlanta, GA. CDC Division of Health Informatics and Surveillance. Available at: https://www.cdc.gov/nndss/data-statistics/index.html.
Acknowledgment:
  • CDC acknowledges the local, state, and territorial health departments that collected the data from a range of case ascertainment sources (e.g., health-care providers, hospitals, laboratories) and reported these data to CDC's National Notifiable Diseases Surveillance System.