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 1g. Weekly cases* of notifiable diseases, United States, U.S. Territories, and Non-U.S. Residents week ending December 18, 2021 (Week 50)
Reporting Area Carbapenemase-producing carbapenem-resistant Enterobacteriaceae § Chancroid Chlamydia trachomatis 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 6 70 1,465 1,734 - 1 6 - 10,339 32,799 1,411,483 1,497,601
New England - 3 7 77 - 0 - - 145 958 36,745 47,282
Connecticut - 0 - - - 0 - - - 262 92 12,245
Maine - 0 - - - 0 - - 59 98 2,991 3,271
Massachusetts - 0 - - - 0 - - - 578 25,257 23,770
New Hampshire - 0 - 13 - 0 - - 57 92 2,894 2,806
Rhode Island - 3 7 63 - 0 - - - 465 4,651 4,121
Vermont - 0 - 1 - 0 - - 29 34 860 1,069
Middle Atlantic - 13 387 402 - 0 - - 2,579 3,956 177,052 173,858
New Jersey - 0 - - - 0 - - 401 797 29,604 30,173
New York (excluding New York City) - 0 - - - 0 - - 867 1,004 37,282 39,814
New York City - 8 61 79 - 0 - - 573 1,398 59,560 53,959
Pennsylvania - 13 326 323 - 0 - - 738 1,170 50,606 49,912
East North Central 2 14 247 413 - 1 1 - 544 5,089 189,399 220,586
Illinois - 0 - - - 0 - - 68 1,506 47,663 65,156
Indiana 2 11 145 203 - 0 - - - 827 29,662 31,480
Michigan - 7 92 182 - 1 1 - 144 1,057 33,477 42,118
Ohio - 0 - - - 0 - - - 1,257 51,822 56,652
Wisconsin - 2 10 28 - 0 - - 332 656 26,775 25,180
West North Central - 2 18 44 - 0 - - 481 2,156 85,366 94,367
Iowa - 0 - - - 0 - - 53 335 12,544 14,330
Kansas - 0 - - - 0 - - 42 299 5,146 13,883
Minnesota - 1 - 29 - 0 - - 9 516 20,971 20,963
Missouri - 0 - - - 0 - - 194 1,248 29,793 29,482
Nebraska - 0 - - - 0 - - 151 240 9,091 8,482
North Dakota - 2 15 11 - 0 - - 1 96 3,584 3,380
South Dakota - 1 3 4 - 0 - - 31 110 4,237 3,847
South Atlantic - 29 417 580 - 0 - - 2,393 7,575 317,816 330,888
Delaware - 3 30 25 - 0 - - 84 214 4,735 4,403
District of Columbia - 0 - - - 0 - - - 169 6,326 3,094
Florida N NC N N - 0 - - 1,623 2,266 99,801 94,272
Georgia - 10 78 275 - 0 - - - 1,320 51,987 59,707
Maryland - 0 - - - 0 - - - 768 29,568 30,868
North Carolina - 11 153 183 - 0 - - - 1,332 47,012 61,897
South Carolina - 0 - - - 0 - - 680 1,007 35,322 32,479
Virginia - 24 156 97 - 0 - - - 945 38,220 38,964
West Virginia - 0 - - - 0 - - 6 127 4,845 5,204
East South Central - 0 - 44 - 0 - - 664 3,702 102,806 100,051
Alabama N NC N N - 0 - - 466 748 29,613 25,678
Kentucky - 0 - - - 0 - - - 2,549 16,794 15,285
Mississippi - 0 - 44 - 0 - - 198 502 20,038 22,988
Tennessee - 0 - - - 0 - - - 1,162 36,361 36,100
West South Central - 0 - - - 0 - - 351 4,450 174,467 195,572
Arkansas - 0 - - - 0 - - 111 409 14,785 15,318
Louisiana - 0 - - - 0 - - 192 757 31,038 31,349
Oklahoma - 0 - - - 0 - - 46 378 11,553 20,313
Texas - 0 - - - 0 - - 2 3,114 117,091 128,592
Mountain 2 9 71 43 - 0 - - 351 2,855 112,126 107,568
Arizona 1 9 53 28 - 0 - - - 911 38,039 35,494
Colorado - 0 - - - 0 - - - 742 26,102 24,818
Idaho - 0 - - - 0 - - 109 212 5,892 5,858
Montana - 0 - - - 0 - - 49 109 3,785 3,911
Nevada - 1 3 5 - 0 - - - 563 14,348 14,138
New Mexico - 0 - - - 0 - - 26 283 11,272 11,573
Utah 1 3 15 8 - 0 - - 142 259 10,756 9,910
Wyoming - 0 - 2 - 0 - - 25 77 1,932 1,866
Pacific 2 41 318 131 - 1 5 - 2,831 4,816 215,706 227,429
Alaska - 0 - - - 0 - - - 140 4,634 4,886
California 2 16 306 127 - 1 1 - 2,134 3,967 180,794 170,888
Hawaii - 1 1 4 - 0 - - - 134 - 6,681
Oregon - 2 11 - - 0 - - 321 378 15,137 15,079
Washington - 39 - - - 1 4 - 376 584 15,141 29,895
U.S. Territories - 0 - 8 - 0 - - - 107 1,659 3,918
American Samoa - 0 - - - 0 - - - 0 - -
Commonwealth of Northern Mariana Islands - 0 - - - 0 - - - 0 - -
Guam - 0 - - - 0 - - - 0 - -
Puerto Rico - 0 - 8 - 0 - - - 107 1,659 3,918
U.S. Virgin Islands - 0 - - - 0 - - - 0 - -
Non-U.S. Residents - 0 - - - 0 - - - 22 111 23
Total 6 70 1,465 1,742 - 1 6 - 10,339 32,856 1,413,253 1,501,542
  • 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).
  • § Reporting jurisdictions were informed CDC could receive data for this condition in August 2019. Please note there will be a delay in reporting of case notifications for this condition to CDC.
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.