Notice: For data on COVID-19 in the United States, please see https://www.cdc.gov/coronavirus/2019-ncov/cases-in-us.html

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 19, 2020 (Week 51)
Reporting Area Severe acute respiratory syndrome-associated coronavirus disease Shiga toxin-producing Escherichia coli (STEC) Shigellosis
Current weekPrevious 52 weeks Max †Cum YTD 2020 †Cum YTD 2019 †Current weekPrevious 52 weeks Max †Cum YTD 2020 †Cum YTD 2019 †Current weekPrevious 52 weeks Max †Cum YTD 2020 †Cum YTD 2019 †
U.S. Residents, excluding U.S. Territories - 3 - - 26 794 6,908 16,145 32 980 7,179 17,594
New England - 2 - - - 12 240 385 1 13 217 507
Connecticut - 0 - - - 5 72 131 - 5 46 126
Maine - 0 - - - 3 11 27 - 2 3 12
Massachusetts - 2 - - - 6 73 96 1 8 124 252
New Hampshire - 0 - - - 2 20 34 - 2 6 21
Rhode Island - 0 - - - 3 26 48 - 4 31 84
Vermont - 0 - - - 4 38 49 - 3 7 12
Middle Atlantic - 0 - - 5 53 968 1,742 11 47 885 2,195
New Jersey - 0 - - - 4 1 55 - 10 81 519
New York (excluding New York City) - 0 - - 5 36 361 523 3 12 154 322
New York City - 0 - - - 20 353 734 8 28 497 1,100
Pennsylvania - 0 - - - 13 253 430 - 11 153 254
East North Central - 0 - - - 41 983 2,173 - 31 507 1,397
Illinois - 0 - - - 14 246 551 - 15 185 457
Indiana - 0 - - - 7 102 222 - 3 15 137
Michigan - 0 - - - 5 24 286 - 6 47 211
Ohio - 0 - - - 21 347 579 - 10 198 427
Wisconsin - 0 - - - 14 264 535 - 6 62 165
West North Central - 2 - - - 44 802 2,309 - 15 151 655
Iowa - 0 - - - 23 312 592 - 5 53 99
Kansas - 0 - - - 8 115 227 - 1 11 54
Minnesota - 0 - - - 4 - 695 - 8 - 293
Missouri - 2 - - - 10 194 384 - 5 37 121
Nebraska - 0 - - - 11 145 198 - 4 36 66
North Dakota - 2 - - - 4 33 80 - 6 10 13
South Dakota - 0 - - - 3 3 133 - 1 4 9
South Atlantic - 0 - - 7 45 994 2,471 - 76 1,028 2,985
Delaware - 0 - - - 3 20 34 - 2 8 31
District of Columbia - 0 - - - 1 4 12 - 3 24 74
Florida - 0 - - - 24 285 769 - 34 374 1,386
Georgia - 0 - - - 13 202 471 - 19 241 592
Maryland - 0 - - - 6 91 240 - 6 93 195
North Carolina - 0 - - - 6 77 383 - 14 109 318
South Carolina - 0 - - 1 5 78 113 - 4 64 128
Virginia - 0 - - 6 14 201 384 - 22 111 240
West Virginia - 0 - - - 4 36 65 - 1 4 21
East South Central - 0 - - - 20 359 988 2 44 513 894
Alabama - 0 - - - 8 95 136 - 35 337 411
Kentucky - 0 - - - 10 36 378 - 3 22 124
Mississippi - 0 - - - 3 12 94 - 5 30 178
Tennessee - 0 - - - 13 216 380 2 7 124 181
West South Central - 0 - - 10 129 555 1,623 9 420 1,405 4,374
Arkansas - 0 - - 3 7 62 131 - 5 30 157
Louisiana - 0 - - 1 4 38 86 2 16 139 541
Oklahoma - 0 - - - 27 100 207 - 48 119 116
Texas - 0 - - 6 95 355 1,199 7 355 1,117 3,560
Mountain - 2 - - 2 32 826 1,441 1 25 539 1,020
Arizona - 0 - - 1 7 176 291 1 11 236 419
Colorado - 2 - - 1 13 232 490 - 12 188 266
Idaho - 0 - - - 9 118 207 - 2 2 49
Montana - 0 - - - 5 58 67 - 2 9 11
Nevada - 0 - - - 2 13 53 - 4 13 81
New Mexico - 0 - - - 3 28 100 - 5 48 128
Utah - 0 - - - 15 164 184 - 3 43 65
Wyoming - 0 - - - 3 37 49 - 0 - 1
Pacific - 1 - - 2 489 1,181 3,013 8 378 1,934 3,567
Alaska - 0 - - - 2 4 6 - 1 1 6
California - 0 - - 2 43 918 2,652 2 76 1,536 3,322
Hawaii - 0 - - - 2 6 3 - 3 32 81
Oregon - 1 - - - 11 203 352 - 23 180 158
Washington - 0 - - - 465 50 - 6 314 185 -
U.S. Territories - 0 - - - 0 - 1 - 1 - 37
American Samoa - 0 - - - 0 - - - 0 - -
Commonwealth of Northern Mariana Islands - 0 - - - 0 - - - 0 - -
Guam - 0 - - - 0 - - - 1 - 31
Puerto Rico - 0 - - - 0 - 1 - 0 - 6
U.S. Virgin Islands - 0 - - - 0 - - - 0 - -
Non-U.S. Residents - 0 - - - 0 - - - 2 3 -
Total - 3 - - 26 794 6,908 16,146 32 980 7,182 17,631
  • 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 2020 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://wwwn.cdc.gov/nndss/document/Users_guide_WONDER_tables_cleared_final.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 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://wwwn.cdc.gov/nndss/conditions/. 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://wwwn.cdc.gov/nndss/infectious-tables.html.
Acknowledgement:
  • 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.