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 Giardiasis
Current weekPrevious 52 weeks Max †Cum YTD 2024 †Cum YTD 2023 †
U.S. Residents, excluding U.S. Territories 119 408 14,876 15,905
New England 10 49 1,243 1,055
Connecticut - 13 210 187
Maine 2 9 127 146
Massachusetts 8 30 724 573
New Hampshire - 10 95 87
Rhode Island - 7 87 62
Vermont N NC N N
Middle Atlantic 35 101 3,299 3,407
New Jersey - 15 42 474
New York (excluding New York City) 16 48 1,186 959
New York City 17 43 1,448 1,333
Pennsylvania 2 24 623 641
East North Central 5 105 1,862 1,641
Illinois N NC N N
Indiana 1 11 230 188
Michigan 1 26 501 498
Ohio - 39 546 442
Wisconsin 3 37 585 513
West North Central 2 27 803 1,225
Iowa - 9 182 193
Kansas - 7 118 133
Minnesota - 10 - 438
Missouri - 13 293 261
Nebraska 2 5 112 90
North Dakota - 2 31 31
South Dakota - 4 67 79
South Atlantic 30 68 2,420 2,736
Delaware - 5 36 41
District of Columbia - 4 6 98
Florida 24 45 1,238 1,294
Georgia - 14 334 539
Maryland 5 15 269 218
North Carolina N NC N N
South Carolina - 11 215 161
Virginia 1 9 218 301
West Virginia - 6 104 84
East South Central - 14 313 424
Alabama - 10 69 214
Kentucky - 10 244 210
Mississippi N NC N N
Tennessee N NC N N
West South Central 1 22 439 408
Arkansas 1 11 146 161
Louisiana - 15 293 247
Oklahoma N NC N N
Texas N NC N N
Mountain 9 43 1,029 1,552
Arizona 4 11 188 157
Colorado - 18 192 682
Idaho - 7 111 134
Montana - 6 84 93
Nevada 1 4 88 101
New Mexico - 6 87 90
Utah 4 16 272 249
Wyoming - 1 7 46
Pacific 27 106 3,468 3,457
Alaska - 9 101 62
California 20 84 2,702 2,713
Hawaii - 4 40 46
Oregon 7 18 334 390
Washington - 12 291 246
U.S. Territories - 3 17 24
American Samoa - 0 - -
Commonwealth of Northern Mariana Islands - 0 - -
Guam - 1 1 -
Puerto Rico - 2 14 18
U.S. Virgin Islands - 1 2 6
Non-U.S. Residents 2 5 111 7
Total 121 412 15,004 15,936
  • 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.