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 9, 2023 (Week 49)
Reporting Area Giardiasis
Current weekPrevious 52 weeks Max †Cum YTD 2023 †Cum YTD 2022 †
U.S. Residents, excluding U.S. Territories 160 407 13,770 13,152
New England 6 33 854 997
Connecticut - 4 51 174
Maine 1 9 138 96
Massachusetts 5 23 530 591
New Hampshire - 7 77 81
Rhode Island - 5 58 55
Vermont N NC N N
Middle Atlantic 66 100 3,238 2,632
New Jersey - 15 268 342
New York (excluding New York City) 27 48 1,146 822
New York City 32 45 1,301 905
Pennsylvania 7 20 523 563
East North Central 10 43 1,351 1,431
Illinois N NC N N
Indiana - 5 79 161
Michigan - 16 412 382
Ohio 8 21 424 476
Wisconsin 2 21 436 412
West North Central 6 30 715 1,076
Iowa - 9 168 162
Kansas - 8 127 113
Minnesota - 9 - 454
Missouri 5 12 244 178
Nebraska 1 5 75 82
North Dakota - 3 28 27
South Dakota - 7 73 60
South Atlantic 26 72 2,378 2,290
Delaware 3 3 36 27
District of Columbia - 1 2 -
Florida 12 38 1,175 1,101
Georgia 5 18 449 525
Maryland 2 9 213 183
North Carolina N NC N N
South Carolina 2 8 145 121
Virginia 2 13 284 243
West Virginia - 6 74 90
East South Central 3 17 391 290
Alabama 2 13 202 154
Kentucky 1 10 189 136
Mississippi N NC N N
Tennessee N NC N N
West South Central 2 17 352 312
Arkansas 2 11 150 104
Louisiana - 9 202 208
Oklahoma N NC N N
Texas N NC N N
Mountain 17 60 1,383 1,133
Arizona 2 7 149 111
Colorado 11 33 623 485
Idaho 3 6 121 119
Montana - 7 87 64
Nevada - 4 56 66
New Mexico 1 5 82 65
Utah - 10 227 181
Wyoming - 4 38 42
Pacific 24 92 3,108 2,991
Alaska - 6 56 97
California 20 72 2,440 2,285
Hawaii - 3 34 25
Oregon 4 16 373 315
Washington - 12 205 269
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 - 1 5 4
Total 160 408 13,788 13,170
  • 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.