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 11, 2021 (Week 49)
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 1 4 50 72 - 15 146 162 279 1,685 35,480 41,924
New England - 2 6 5 - 2 10 8 9 83 1,654 1,481
Connecticut - 2 3 2 - 2 6 3 - 19 350 336
Maine - 0 - - - 0 - - 1 10 126 108
Massachusetts - 2 3 3 - 1 4 4 7 45 873 709
New Hampshire - 0 - - - 0 - 1 - 10 118 144
Rhode Island - 0 - - - 0 - - - 8 122 108
Vermont - 0 - - - 0 - - 1 6 65 76
Middle Atlantic 1 1 11 9 - 3 26 44 42 132 3,594 4,331
New Jersey - 0 - - - 0 - 8 - 13 16 1,022
New York (excluding New York City) - 1 5 3 - 3 8 5 22 59 1,208 1,110
New York City 1 1 4 5 - 2 11 20 11 52 1,089 890
Pennsylvania - 1 2 1 - 1 7 11 9 52 1,281 1,309
East North Central - 2 5 15 - 2 13 10 4 174 3,722 4,614
Illinois - 1 3 11 - 2 9 5 - 119 1,621 1,291
Indiana - 0 - - - 0 - 1 - 13 81 646
Michigan - 0 - 3 - 0 - 1 - 9 24 878
Ohio - 1 2 - - 2 4 3 - 43 1,145 1,123
Wisconsin - 0 - 1 - 0 - - 4 40 851 676
West North Central - 1 2 4 - 1 4 5 6 63 1,793 2,989
Iowa - 1 1 3 - 0 - - - 32 617 578
Kansas - 0 - - - 1 2 - - 21 361 459
Minnesota - 0 - 1 - 1 - 2 - 10 - 680
Missouri - 0 - - - 1 - 3 - 16 192 756
Nebraska - 1 1 - - 1 2 - 6 19 341 257
North Dakota - 0 - - - 0 - - - 5 83 86
South Dakota - 0 - - - 0 - - - 14 199 173
South Atlantic - 1 6 7 - 2 25 26 60 408 11,504 14,059
Delaware - 0 - 1 - 1 3 1 1 12 168 185
District of Columbia - 0 - - - 0 - 2 - 2 11 32
Florida - 1 2 1 - 1 4 2 23 273 5,209 6,108
Georgia - 0 - - - 0 - 1 8 78 1,779 1,993
Maryland - 1 2 3 - 1 11 6 - 40 693 678
North Carolina - 0 - - - 1 1 4 - 66 1,027 2,263
South Carolina - 0 - - - 1 1 2 20 75 1,470 1,646
Virginia - 1 2 2 - 2 5 8 8 50 1,071 908
West Virginia - 0 - - - 0 - - - 6 76 246
East South Central - 1 2 3 - 2 8 2 9 100 2,305 3,165
Alabama - 1 1 2 - 2 6 - 2 38 810 835
Kentucky - 0 - - - 1 1 1 1 25 406 624
Mississippi - 0 - - - 0 - - - 26 276 910
Tennessee - 1 1 1 - 1 1 1 6 36 813 796
West South Central - 1 2 5 - 2 8 10 60 363 4,667 4,771
Arkansas - 1 1 - - 1 1 1 10 26 491 411
Louisiana - 1 1 1 - 0 - - 23 51 790 1,250
Oklahoma - 0 - - - 1 1 2 14 77 762 746
Texas - 0 - 4 - 2 6 7 13 280 2,624 2,364
Mountain - 2 6 5 - 2 14 6 41 87 2,623 2,290
Arizona - 0 - 2 - 2 7 3 12 32 834 603
Colorado - 0 - 1 - 1 2 3 23 40 922 565
Idaho - 1 5 - - 0 - - - 6 73 200
Montana - 0 - - - 0 - - - 6 68 186
Nevada - 0 - 2 - 1 1 - - 4 51 51
New Mexico - 0 - - - 1 2 - 2 15 294 241
Utah - 1 1 - - 1 2 - 4 23 312 340
Wyoming - 0 - - - 0 - - - 8 69 104
Pacific - 2 10 19 - 11 38 51 48 742 3,618 4,224
Alaska - 1 1 2 - 0 - - - 2 16 55
California - 2 5 17 - 4 36 49 35 102 2,623 3,595
Hawaii - 1 3 - - 1 - 1 - 8 96 125
Oregon - 0 - - - 1 1 1 7 12 305 449
Washington - 2 1 - - 10 1 - 6 703 578 -
U.S. Territories - 3 7 1 - 2 3 - - 32 391 307
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 - - - 32 377 296
U.S. Virgin Islands - 0 - - - 0 - - - 1 3 4
Non-U.S. Residents - 0 - - - 0 - - - 2 2 2
Total 1 7 57 73 - 15 149 162 279 1,685 35,873 42,233
  • 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.