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 September 16, 2023 (Week 37)
Reporting Area Giardiasis
Current weekPrevious 52 weeks Max †Cum YTD 2023 †Cum YTD 2022 †
U.S. Residents, excluding U.S. Territories 204 364 9,534 9,626
New England 16 34 601 762
Connecticut - 8 39 138
Maine 4 10 95 62
Massachusetts 11 22 382 470
New Hampshire 1 5 48 52
Rhode Island - 4 37 40
Vermont N NC N N
Middle Atlantic 81 87 2,056 1,959
New Jersey - 9 3 263
New York (excluding New York City) 48 42 718 583
New York City 25 36 935 690
Pennsylvania 8 20 400 423
East North Central 22 195 925 819
Illinois N NC N N
Indiana 1 7 52 112
Michigan 1 15 289 288
Ohio 16 174 293 117
Wisconsin 4 22 291 302
West North Central 11 31 475 820
Iowa - 9 122 139
Kansas 1 7 76 84
Minnesota - 15 - 347
Missouri 5 9 161 126
Nebraska 3 6 54 60
North Dakota 2 3 21 19
South Dakota - 4 41 45
South Atlantic 18 69 1,769 1,666
Delaware 1 2 12 20
District of Columbia - 0 - -
Florida 3 38 890 800
Georgia - 19 346 393
Maryland 7 11 150 134
North Carolina N NC N N
South Carolina 2 8 113 83
Virginia 5 13 223 173
West Virginia - 5 35 63
East South Central 4 13 267 205
Alabama 4 10 146 109
Kentucky - 8 121 96
Mississippi N NC N N
Tennessee N NC N N
West South Central 1 17 251 234
Arkansas 1 11 102 78
Louisiana - 9 149 156
Oklahoma N NC N N
Texas N NC N N
Mountain 19 44 962 860
Arizona 6 7 105 80
Colorado 10 18 422 365
Idaho 1 6 76 87
Montana - 6 61 46
Nevada - 4 51 57
New Mexico - 5 54 50
Utah 2 9 164 145
Wyoming - 4 29 30
Pacific 32 81 2,228 2,301
Alaska 4 9 30 62
California 21 67 1,734 1,767
Hawaii - 3 29 18
Oregon 7 16 294 246
Washington - 8 141 208
U.S. Territories - 2 11 11
American Samoa - 0 - -
Commonwealth of Northern Mariana Islands - 0 - -
Guam - 0 - -
Puerto Rico - 2 11 8
U.S. Virgin Islands - 0 - 3
Non-U.S. Residents - 1 4 3
Total 204 366 9,549 9,640
  • 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.