Notice: For data on COVID-19 in the United States, please see https://www.cdc.gov/coronavirus/2019-ncov/cases-in-us.html
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 1ff. Weekly cases* of notifiable diseases, United States, U.S. Territories, and Non-U.S. Residents week ending December 4, 2021 (Week 48)
Reporting Area Severe acute respiratory syndrome-associated coronavirus disease Shiga toxin-producing Escherichia coli (STEC) Shigellosis
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 - 0 - - 64 477 9,444 8,864 97 349 7,218 8,391
New England - 0 - - - 15 280 254 6 12 277 217
Connecticut - 0 - - - 7 94 72 - 6 63 48
Maine - 0 - - - 3 22 10 1 2 6 3
Massachusetts - 0 - - - 7 102 85 5 7 153 120
New Hampshire - 0 - - - 2 20 20 - 3 8 8
Rhode Island - 0 - - - 4 39 27 - 4 45 31
Vermont - 0 - - - 1 3 40 - 1 2 7
Middle Atlantic - 0 - - 12 75 1,383 1,010 21 59 1,291 970
New Jersey - 0 - - - 3 10 30 1 14 213 162
New York (excluding New York City) - 0 - - 10 37 564 333 5 16 195 145
New York City - 0 - - 1 25 434 373 15 30 698 483
Pennsylvania - 0 - - 1 23 375 274 - 9 185 180
East North Central - 0 - - - 51 1,135 1,271 2 22 532 676
Illinois - 0 - - - 19 299 339 - 14 233 229
Indiana - 0 - - - 4 17 124 - 2 4 53
Michigan - 0 - - - 6 1 195 - 5 4 139
Ohio - 0 - - - 18 430 338 - 11 201 189
Wisconsin - 0 - - - 20 388 275 2 7 90 66
West North Central - 0 - - 2 57 998 1,414 - 21 189 325
Iowa - 0 - - - 30 451 349 - 7 59 60
Kansas - 0 - - - 15 149 153 - 8 41 16
Minnesota - 0 - - - 12 - 388 - 3 - 136
Missouri - 0 - - - 8 73 243 - 3 23 55
Nebraska - 0 - - 2 12 187 144 - 4 49 36
North Dakota - 0 - - - 15 59 47 - 1 2 10
South Dakota - 0 - - - 6 79 90 - 2 15 12
South Atlantic - 0 - - 13 66 1,489 1,388 19 36 851 1,462
Delaware - 0 - - - 3 19 22 - 2 15 9
District of Columbia - 0 - - - 0 - 8 - 2 7 31
Florida - 0 - - 3 22 473 393 9 18 437 506
Georgia - 0 - - - 18 334 266 - 10 - 416
Maryland - 0 - - 2 16 214 124 4 7 120 109
North Carolina - 0 - - - 10 107 235 - 6 73 189
South Carolina - 0 - - 2 4 70 74 2 4 42 62
Virginia - 0 - - 6 13 270 197 4 8 156 122
West Virginia - 0 - - - 2 2 69 - 1 1 18
East South Central - 0 - - 1 33 532 474 1 11 228 551
Alabama - 0 - - 1 7 131 95 1 5 81 345
Kentucky - 0 - - - 15 140 147 - 4 31 47
Mississippi - 0 - - - 1 1 12 - 2 7 30
Tennessee - 0 - - - 16 260 220 - 7 109 129
West South Central - 0 - - 17 71 898 652 7 42 561 1,603
Arkansas - 0 - - - 8 102 68 - 3 15 31
Louisiana - 0 - - - 6 63 71 4 5 71 169
Oklahoma - 0 - - 14 43 175 128 3 28 38 126
Texas - 0 - - 3 53 558 385 - 32 437 1,277
Mountain - 0 - - 6 60 1,209 976 13 34 809 636
Arizona - 0 - - 2 17 266 175 8 17 339 238
Colorado - 0 - - 4 27 451 275 2 13 206 209
Idaho - 0 - - - 5 56 141 - 4 29 18
Montana - 0 - - - 8 63 88 - 2 3 10
Nevada - 0 - - - 5 63 34 - 6 70 62
New Mexico - 0 - - - 5 37 37 2 10 102 51
Utah - 0 - - - 12 207 175 1 4 56 47
Wyoming - 0 - - - 5 66 51 - 1 4 1
Pacific - 0 - - 13 315 1,520 1,425 28 241 2,480 1,951
Alaska - 0 - - - 1 8 8 - 1 3 1
California - 0 - - 10 47 1,204 1,215 17 70 2,031 1,735
Hawaii - 0 - - - 2 3 6 - 3 24 38
Oregon - 0 - - 3 19 278 196 2 7 110 177
Washington - 0 - - - 308 27 - 9 225 312 -
U.S. Territories - 0 - - - 1 3 6 - 2 5 5
American Samoa - 0 - - - 0 - - - 0 - -
Commonwealth of Northern Mariana Islands - 0 - - - 0 - - - 0 - 1
Guam - 0 - - - 0 - - - 1 4 4
Puerto Rico - 0 - - - 1 3 6 - 1 1 -
U.S. Virgin Islands - 0 - - - 0 - - - 0 - -
Non-U.S. Residents - 0 - - - 0 - - - 0 - 2
Total - 0 - - 64 477 9,447 8,870 97 349 7,223 8,398
  • 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).
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.