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 11, 2021 (Week 49)
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 - - 50 478 9,685 9,039 77 351 7,471 8,475
New England - 0 - - - 15 284 258 3 12 278 217
Connecticut - 0 - - - 7 94 73 - 6 63 48
Maine - 0 - - - 3 22 10 - 2 6 3
Massachusetts - 0 - - - 7 103 87 3 7 154 120
New Hampshire - 0 - - - 2 20 21 - 3 8 8
Rhode Island - 0 - - - 4 39 27 - 4 45 31
Vermont - 0 - - - 1 6 40 - 1 2 7
Middle Atlantic - 0 - - 10 76 1,410 1,023 20 60 1,327 989
New Jersey - 0 - - - 3 10 30 1 14 221 164
New York (excluding New York City) - 0 - - 8 38 574 338 4 16 202 151
New York City - 0 - - - 25 447 380 14 30 716 491
Pennsylvania - 0 - - 2 23 379 275 1 9 188 183
East North Central - 0 - - 3 51 1,161 1,287 - 22 543 689
Illinois - 0 - - - 19 317 340 - 14 238 231
Indiana - 0 - - - 4 17 127 - 2 4 53
Michigan - 0 - - - 6 1 196 - 3 4 144
Ohio - 0 - - - 18 430 344 - 11 205 194
Wisconsin - 0 - - 3 20 396 280 - 7 92 67
West North Central - 0 - - 1 57 1,003 1,433 1 21 191 331
Iowa - 0 - - - 30 454 355 - 7 59 62
Kansas - 0 - - - 15 149 154 - 8 42 17
Minnesota - 0 - - - 12 - 392 - 3 - 137
Missouri - 0 - - - 8 73 244 - 3 23 57
Nebraska - 0 - - 1 12 188 147 1 4 50 36
North Dakota - 0 - - - 15 60 48 - 1 2 10
South Dakota - 0 - - - 6 79 93 - 2 15 12
South Atlantic - 0 - - 10 66 1,528 1,420 5 43 879 1,473
Delaware - 0 - - - 3 19 22 1 2 17 9
District of Columbia - 0 - - - 0 - 8 - 2 10 31
Florida - 0 - - 2 22 491 407 3 30 461 512
Georgia - 0 - - - 18 346 271 - 10 - 412
Maryland - 0 - - - 16 213 124 - 7 117 109
North Carolina - 0 - - - 10 107 241 - 6 73 194
South Carolina - 0 - - 4 4 75 75 - 4 42 62
Virginia - 0 - - 4 13 275 201 1 7 158 126
West Virginia - 0 - - - 2 2 71 - 1 1 18
East South Central - 0 - - 3 33 551 505 - 11 241 580
Alabama - 0 - - - 7 133 96 - 5 81 345
Kentucky - 0 - - - 15 143 148 - 4 31 48
Mississippi - 0 - - - 1 2 37 - 3 11 53
Tennessee - 0 - - 3 16 273 224 - 7 118 134
West South Central - 0 - - 6 71 957 675 5 42 628 1,625
Arkansas - 0 - - 5 8 106 68 1 3 16 31
Louisiana - 0 - - - 6 63 74 1 5 71 170
Oklahoma - 0 - - 1 43 175 130 1 28 39 126
Texas - 0 - - - 53 613 403 2 32 502 1,298
Mountain - 0 - - 5 60 1,220 995 9 33 822 649
Arizona - 0 - - 2 17 268 179 6 19 347 245
Colorado - 0 - - 3 27 458 279 1 13 207 211
Idaho - 0 - - - 5 56 144 - 4 28 19
Montana - 0 - - - 8 63 89 - 2 3 12
Nevada - 0 - - - 5 63 37 - 6 70 63
New Mexico - 0 - - - 5 38 37 1 9 106 51
Utah - 0 - - - 12 208 179 1 4 57 47
Wyoming - 0 - - - 5 66 51 - 1 4 1
Pacific - 0 - - 12 315 1,571 1,443 34 240 2,562 1,922
Alaska - 0 - - 1 1 9 8 - 1 3 1
California - 0 - - 10 47 1,251 1,229 21 70 2,088 1,704
Hawaii - 0 - - - 2 3 6 - 3 24 38
Oregon - 0 - - 1 19 281 200 3 7 114 179
Washington - 0 - - - 308 27 - 10 225 333 -
U.S. Territories - 0 - - - 1 6 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 6 6 - 1 1 -
U.S. Virgin Islands - 0 - - - 0 - - - 0 - -
Non-U.S. Residents - 0 - - - 0 - - - 0 - 2
Total - 0 - - 50 478 9,691 9,045 77 351 7,476 8,482
  • 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.