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 25, 2021 (Week 51)
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 73 1 15 158 167 160 1,685 37,538 43,110
New England - 2 6 5 - 2 10 8 16 82 1,695 1,509
Connecticut - 2 3 2 - 2 6 3 - 19 350 345
Maine - 0 - - - 0 - - - 10 127 110
Massachusetts - 2 3 3 - 1 4 4 15 44 907 720
New Hampshire - 0 - - - 0 - 1 - 10 118 146
Rhode Island - 0 - - - 0 - - - 8 130 111
Vermont - 0 - - - 0 - - 1 5 63 77
Middle Atlantic - 1 11 9 - 3 26 45 32 132 3,703 4,449
New Jersey - 0 - - - 0 - 8 - 12 16 1,043
New York (excluding New York City) - 1 5 3 - 3 8 5 10 59 1,234 1,140
New York City - 1 4 5 - 2 11 21 15 52 1,125 924
Pennsylvania - 1 2 1 - 1 7 11 7 52 1,328 1,342
East North Central - 2 5 15 - 2 14 10 3 176 3,792 4,726
Illinois - 1 3 11 - 2 10 5 - 121 1,637 1,316
Indiana - 0 - - - 0 - 1 - 13 81 663
Michigan - 0 - 3 - 0 - 1 - 9 24 892
Ohio - 1 2 - - 2 4 3 - 43 1,181 1,163
Wisconsin - 0 - 1 - 0 - - 3 40 869 692
West North Central - 1 1 4 - 1 7 6 10 95 2,479 3,069
Iowa - 1 1 3 - 0 - - 2 32 640 598
Kansas - 0 - - - 1 2 - 2 23 412 472
Minnesota - 0 - 1 - 1 - 2 - 10 - 700
Missouri - 0 - - - 1 4 4 2 35 778 775
Nebraska - 0 - - - 1 1 - 4 19 346 258
North Dakota - 0 - - - 0 - - - 7 97 89
South Dakota - 0 - - - 0 - - - 14 206 177
South Atlantic - 1 6 7 - 2 26 27 14 408 11,869 14,483
Delaware - 0 - 1 - 1 3 1 - 12 169 191
District of Columbia - 0 - - - 0 - 2 - 2 11 33
Florida - 1 2 1 - 1 4 2 - 273 5,361 6,341
Georgia - 0 - - - 0 - 1 6 78 1,950 2,035
Maryland - 1 2 3 - 1 11 7 - 40 693 689
North Carolina - 0 - - - 1 1 4 - 66 1,027 2,311
South Carolina - 0 - - - 1 1 2 3 76 1,492 1,681
Virginia - 1 2 2 - 2 6 8 5 50 1,090 953
West Virginia - 0 - - - 0 - - - 6 76 249
East South Central - 1 2 2 - 2 8 3 2 103 2,375 3,256
Alabama - 1 1 1 - 2 6 1 1 38 836 864
Kentucky - 0 - - - 1 1 1 - 25 416 644
Mississippi - 0 - - - 0 - - - 26 294 926
Tennessee - 1 1 1 - 1 1 1 1 36 829 822
West South Central - 1 2 6 - 2 10 11 28 363 5,199 5,028
Arkansas - 1 1 1 - 1 1 1 7 26 513 426
Louisiana - 1 1 1 - 0 - - 13 50 818 1,292
Oklahoma - 0 - - - 1 1 2 8 77 778 758
Texas - 0 - 4 - 2 8 8 - 280 3,090 2,552
Mountain - 2 6 5 1 3 18 6 29 87 2,707 2,341
Arizona - 0 - 2 - 2 8 3 12 32 855 622
Colorado - 0 - 1 - 1 2 3 11 40 954 580
Idaho - 1 5 - - 0 - - - 6 73 204
Montana - 0 - - - 0 - - - 6 69 187
Nevada - 0 - 2 - 1 1 - 1 4 53 51
New Mexico - 0 - - 1 1 3 - - 15 309 246
Utah - 1 1 - - 2 4 - 5 23 324 347
Wyoming - 0 - - - 0 - - - 8 70 104
Pacific - 2 10 20 - 11 39 51 26 742 3,719 4,249
Alaska - 1 1 2 - 0 - - - 2 16 57
California - 2 5 18 - 4 37 49 17 102 2,696 3,607
Hawaii - 1 3 - - 1 - 1 1 8 97 129
Oregon - 0 - - - 1 1 1 6 12 315 456
Washington - 2 1 - - 10 1 - 2 703 595 -
U.S. Territories - 3 7 1 - 2 3 - - 32 396 316
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 - - - 32 382 305
U.S. Virgin Islands - 0 - - - 0 - - - 1 3 4
Non-U.S. Residents - 0 - - - 1 1 - - 2 2 2
Total - 7 56 74 1 15 162 167 160 1,685 37,936 43,428
  • 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.