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 Giardiasis
Current weekPrevious 52 weeks Max †Cum YTD 2023 †Cum YTD 2022 †
U.S. Residents, excluding U.S. Territories 38 419 14,617 13,819
New England 3 33 894 1,034
Connecticut - 4 51 182
Maine 1 9 144 99
Massachusetts 2 23 560 611
New Hampshire - 7 77 83
Rhode Island - 5 62 59
Vermont N NC N N
Middle Atlantic 25 106 3,531 2,802
New Jersey - 19 386 357
New York (excluding New York City) 15 48 1,197 898
New York City 9 45 1,356 958
Pennsylvania 1 20 592 589
East North Central 1 45 1,460 1,480
Illinois N NC N N
Indiana 1 7 133 169
Michigan - 16 436 398
Ohio - 21 444 495
Wisconsin - 22 447 418
West North Central - 31 757 1,125
Iowa - 9 190 169
Kansas - 8 127 118
Minnesota - 6 - 472
Missouri - 12 254 190
Nebraska - 5 82 85
North Dakota - 3 28 27
South Dakota - 7 76 64
South Atlantic 2 72 2,454 2,437
Delaware - 3 38 29
District of Columbia - 2 3 -
Florida - 38 1,184 1,178
Georgia 1 18 464 549
Maryland 1 9 225 188
North Carolina N NC N N
South Carolina - 8 158 131
Virginia - 13 299 270
West Virginia - 6 83 92
East South Central - 17 408 302
Alabama - 13 210 162
Kentucky - 10 198 140
Mississippi N NC N N
Tennessee N NC N N
West South Central - 17 358 333
Arkansas - 11 156 117
Louisiana - 9 202 216
Oklahoma N NC N N
Texas N NC N N
Mountain 5 60 1,462 1,188
Arizona 2 7 159 113
Colorado 1 33 663 511
Idaho 1 6 130 133
Montana - 7 91 65
Nevada - 4 57 69
New Mexico - 5 83 66
Utah 1 10 241 188
Wyoming - 4 38 43
Pacific 2 93 3,293 3,118
Alaska - 6 60 97
California 1 73 2,584 2,390
Hawaii - 3 36 26
Oregon 1 16 393 329
Washington - 14 220 276
U.S. Territories - 2 13 14
American Samoa - 0 - -
Commonwealth of Northern Mariana Islands - 0 - -
Guam - 0 - -
Puerto Rico - 2 13 11
U.S. Virgin Islands - 0 - 3
Non-U.S. Residents - 2 9 4
Total 38 420 14,639 13,837
  • 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.