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 30, 2023 (Week 39)
Reporting Area Giardiasis
Current weekPrevious 52 weeks Max †Cum YTD 2023 †Cum YTD 2022 †
U.S. Residents, excluding U.S. Territories 181 357 10,293 10,307
New England 11 32 652 808
Connecticut - 5 39 151
Maine 3 10 107 68
Massachusetts 8 22 414 491
New Hampshire - 5 54 58
Rhode Island - 5 38 40
Vermont N NC N N
Middle Atlantic 90 98 2,268 2,096
New Jersey - 9 3 279
New York (excluding New York City) 47 48 805 628
New York City 40 39 1,022 730
Pennsylvania 3 20 438 459
East North Central 24 195 1,018 889
Illinois N NC N N
Indiana - 7 57 119
Michigan 4 15 315 311
Ohio 13 174 316 123
Wisconsin 7 19 330 336
West North Central 2 31 514 882
Iowa 1 9 129 144
Kansas - 8 83 92
Minnesota - 15 - 376
Missouri - 10 173 138
Nebraska - 6 55 62
North Dakota - 3 24 22
South Dakota 1 4 50 48
South Atlantic 10 69 1,846 1,775
Delaware 1 2 14 22
District of Columbia - 0 - -
Florida 4 38 940 856
Georgia 1 19 352 414
Maryland 4 8 157 142
North Carolina N NC N N
South Carolina - 8 118 90
Virginia - 13 230 179
West Virginia - 5 35 72
East South Central 3 14 295 224
Alabama 3 11 161 114
Kentucky - 8 134 110
Mississippi N NC N N
Tennessee N NC N N
West South Central 4 17 259 251
Arkansas 4 11 110 85
Louisiana - 9 149 166
Oklahoma N NC N N
Texas N NC N N
Mountain 18 49 1,042 924
Arizona 2 7 115 87
Colorado 8 24 466 393
Idaho 2 6 83 92
Montana - 6 61 50
Nevada - 4 51 59
New Mexico - 5 57 56
Utah 6 10 179 154
Wyoming - 4 30 33
Pacific 19 78 2,399 2,458
Alaska 1 9 32 71
California 15 65 1,870 1,877
Hawaii - 3 31 21
Oregon 3 16 309 266
Washington - 10 157 223
U.S. Territories - 2 12 11
American Samoa - 0 - -
Commonwealth of Northern Mariana Islands - 0 - -
Guam - 0 - -
Puerto Rico - 2 12 8
U.S. Virgin Islands - 0 - 3
Non-U.S. Residents - 1 4 3
Total 181 358 10,309 10,321
  • 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.