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 21, 2024 (Week 51)
Reporting Area Legionellosis
Current weekPrevious 52 weeks Max †Cum YTD 2024 †Cum YTD 2023 †
U.S. Residents, excluding U.S. Territories 42 233 7,176 7,890
New England 4 28 339 509
Connecticut 2 6 78 121
Maine - 5 27 24
Massachusetts - 20 181 247
New Hampshire 1 3 33 41
Rhode Island 1 2 14 54
Vermont - 2 6 22
Middle Atlantic 8 54 1,110 1,403
New Jersey - 3 39 268
New York (excluding New York City) 5 25 492 490
New York City 1 19 248 279
Pennsylvania 2 14 331 366
East North Central 4 71 1,612 1,893
Illinois 1 32 397 413
Indiana - 17 207 261
Michigan 1 24 342 418
Ohio 2 33 552 591
Wisconsin - 9 114 210
West North Central 6 30 481 430
Iowa 1 6 58 57
Kansas - 4 43 42
Minnesota 4 14 167 135
Missouri 1 17 151 135
Nebraska - 4 40 39
North Dakota - 1 9 5
South Dakota - 2 13 17
South Atlantic 10 64 1,584 1,434
Delaware 1 4 21 28
District of Columbia - 2 19 23
Florida 8 28 626 460
Georgia - 17 239 195
Maryland - 9 163 168
North Carolina - 12 165 179
South Carolina - 8 121 151
Virginia 1 11 167 164
West Virginia - 4 63 66
East South Central - 22 364 362
Alabama - 6 76 64
Kentucky - 12 141 104
Mississippi - 4 24 40
Tennessee - 11 123 154
West South Central - 57 549 547
Arkansas - 2 32 51
Louisiana - 5 71 64
Oklahoma - 41 2 19
Texas - 18 444 413
Mountain 7 13 323 407
Arizona 7 9 146 114
Colorado - 4 28 128
Idaho - 2 15 29
Montana - 1 7 19
Nevada - 2 36 34
New Mexico - 4 42 34
Utah - 4 48 40
Wyoming - 1 1 9
Pacific 3 26 814 905
Alaska - 2 6 4
California 3 20 600 689
Hawaii - 1 11 19
Oregon - 6 72 64
Washington - 7 125 129
U.S. Territories - 1 3 7
American Samoa N NC N N
Commonwealth of Northern Mariana Islands - 0 - -
Guam - 0 - -
Puerto Rico - 1 3 6
U.S. Virgin Islands - 0 - 1
Non-U.S. Residents - 1 1 1
Total 42 233 7,180 7,898
  • 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 2023 and 2024 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. Office of Public Health Data, Surveillance, and Technology. 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.