Nationally Notifiable Infectious Diseases and Conditions, United States: Weekly Tables

Weekly cases* of notifiable diseases, United States, U.S. Territories, and Non-U.S. Residents week ending December 30, 2023 (Week 52)
Reporting Area Legionellosis
Current weekPrevious 52 weeks Max †Cum YTD 2023 †Cum YTD 2022 †
U.S. Residents, excluding U.S. Territories 13 251 6,850 7,512
New England 1 28 374 466
Connecticut - 3 14 114
Maine - 5 21 25
Massachusetts - 18 233 209
New Hampshire - 4 37 44
Rhode Island 1 6 49 60
Vermont - 2 20 14
Middle Atlantic 7 66 1,184 1,440
New Jersey - 6 74 235
New York (excluding New York City) 7 34 513 456
New York City - 22 277 361
Pennsylvania - 19 320 388
East North Central - 93 1,721 1,733
Illinois - 41 402 378
Indiana - 19 204 255
Michigan - 26 376 368
Ohio - 45 591 504
Wisconsin - 10 148 228
West North Central 1 17 400 411
Iowa - 3 49 45
Kansas - 4 41 39
Minnesota 1 6 135 109
Missouri - 9 129 157
Nebraska - 3 36 33
North Dakota - 1 4 4
South Dakota - 2 6 24
South Atlantic 1 42 1,308 1,507
Delaware - 2 26 19
District of Columbia - 3 24 31
Florida - 19 422 537
Georgia - 11 178 163
Maryland 1 8 145 203
North Carolina - 9 158 178
South Carolina - 9 151 109
Virginia - 9 159 193
West Virginia - 3 45 74
East South Central - 17 299 361
Alabama - 5 64 65
Kentucky - 7 58 104
Mississippi - 3 37 41
Tennessee - 11 140 151
West South Central - 40 465 499
Arkansas - 2 24 53
Louisiana - 4 56 64
Oklahoma - 27 11 38
Texas - 16 374 344
Mountain 3 19 393 377
Arizona 1 8 116 123
Colorado 1 10 129 102
Idaho 1 4 28 20
Montana - 2 14 11
Nevada - 2 26 30
New Mexico - 4 30 32
Utah - 3 41 50
Wyoming - 2 9 9
Pacific - 30 706 718
Alaska - 1 4 2
California - 26 500 585
Hawaii - 2 19 15
Oregon - 7 57 53
Washington - 6 126 63
U.S. Territories - 1 5 7
American Samoa N NC N N
Commonwealth of Northern Mariana Islands - 0 - -
Guam - 0 - -
Puerto Rico - 1 5 4
U.S. Virgin Islands - 0 - 3
Non-U.S. Residents - 1 1 -
Total 13 251 6,856 7,519
  • 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.
  • * Case counts for reporting years 2022 and 2023 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/data-statistics/readers-guides/.
  • † 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 in alphabetical order by condition. 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.