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 Chlamydia trachomatis infection §
Current weekPrevious 52 weeks Max †Cum YTD 2023 †Cum YTD 2022 †
U.S. Residents, excluding U.S. Territories 14,617 32,999 1,090,198 1,251,108
New England 176 1,650 30,534 39,648
Connecticut - 430 1,155 9,324
Maine 43 74 2,227 2,389
Massachusetts - 700 20,417 21,410
New Hampshire - 82 2,000 2,143
Rhode Island 108 694 3,744 3,409
Vermont 25 37 991 973
Middle Atlantic 2,786 4,178 147,557 145,201
New Jersey 528 789 26,419 25,071
New York (excluding New York City) 927 1,032 31,372 29,947
New York City 466 1,478 49,576 48,637
Pennsylvania 865 1,233 40,190 41,546
East North Central 1,660 4,622 145,559 172,124
Illinois - 1,811 37,939 53,713
Indiana 245 837 23,072 25,482
Michigan 276 975 24,517 32,118
Ohio 746 1,213 41,308 41,250
Wisconsin 393 562 18,723 19,561
West North Central 831 2,153 68,633 76,937
Iowa 108 333 10,027 11,193
Kansas 146 325 6,544 10,728
Minnesota 123 497 16,024 16,758
Missouri 453 746 24,019 24,304
Nebraska - 246 6,670 7,303
North Dakota 1 92 1,785 2,737
South Dakota - 125 3,564 3,914
South Atlantic 3,399 7,719 240,076 278,360
Delaware 81 210 4,160 3,824
District of Columbia 132 199 5,456 6,173
Florida 1,763 2,786 84,715 79,626
Georgia - 1,545 42,665 55,457
Maryland U NC U 22,820
North Carolina - 1,445 43,461 48,941
South Carolina 714 766 25,014 27,235
Virginia 684 976 31,378 30,858
West Virginia 25 105 3,227 3,426
East South Central 1,041 2,451 71,696 84,058
Alabama 659 972 25,769 23,423
Kentucky 246 554 12,377 13,691
Mississippi 136 485 13,300 17,820
Tennessee - 1,094 20,250 29,124
West South Central 279 4,795 133,672 177,450
Arkansas 231 436 12,710 13,627
Louisiana - 830 26,259 27,673
Oklahoma 48 473 12,085 15,665
Texas - 3,106 82,618 120,485
Mountain 1,319 2,480 80,725 89,039
Arizona 446 864 29,774 31,263
Colorado 489 782 18,975 19,636
Idaho 58 148 4,291 4,398
Montana 62 93 2,361 3,139
Nevada 19 367 9,047 12,273
New Mexico 27 244 6,751 8,559
Utah 188 254 8,323 8,435
Wyoming 30 51 1,203 1,336
Pacific 3,126 5,049 171,746 188,291
Alaska 82 121 3,086 4,093
California 2,275 4,112 142,443 146,072
Hawaii - 132 - 4,168
Oregon 350 382 11,378 11,876
Washington 419 590 14,839 22,082
U.S. Territories - 124 1,138 3,488
American Samoa - 0 - -
Commonwealth of Northern Mariana Islands - 0 - -
Guam - 0 - -
Puerto Rico - 124 1,138 3,488
U.S. Virgin Islands - 0 - -
Non-U.S. Residents - 7 40 105
Total 14,617 33,085 1,091,376 1,254,701
  • 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).
  • § Beginning in January 2022, only confirmed cases are published to align with the approved CSTE position statement 21-ID-06, whereas in previous years, all case classification statuses were published. This change may cause a decrease in published case counts when compared to previous years.
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.