Notice: Improvements in data processing at CDC were applied to 2020 and 2021 data beginning with the tables published for week 47. Case count changes between tables published for week 46 and week 47 may be due to changes in data processing rules and not due to changes in disease levels.

Nationally Notifiable Infectious Diseases and Conditions, United States: Weekly Tables

TABLE 1m. Weekly cases* of notifiable diseases, United States, U.S. Territories, and Non-U.S. Residents week ending December 25, 2021 (Week 51)
Reporting Area Gonorrhea Haemophilus influenzae, invasive disease
All ages, all serotypes Age <5 years
Serotype b
Current weekPrevious 52 weeks Max †Cum YTD 2021 †Cum YTD 2020 †Current weekPrevious 52 weeks Max †Cum YTD 2021 †Cum YTD 2020 †Current weekPrevious 52 weeks Max †Cum YTD 2021 †Cum YTD 2020 †
U.S. Residents, excluding U.S. Territories 2,745 14,319 605,219 653,486 21 73 2,122 2,885 - 2 14 15
New England 1 304 9,923 14,035 - 7 78 128 - 0 - -
Connecticut - 129 60 4,474 - 2 10 29 - 0 - -
Maine - 17 383 500 - 1 12 9 - 0 - -
Massachusetts - 197 7,643 7,237 - 4 36 54 - 0 - -
New Hampshire - 21 477 443 - 1 3 16 - 0 - -
Rhode Island - 129 1,224 1,248 - 2 13 11 - 0 - -
Vermont 1 8 136 133 - 2 4 9 - 0 - -
Middle Atlantic 565 1,372 52,718 68,829 8 13 266 378 - 1 4 4
New Jersey 106 230 9,067 9,750 - 1 10 65 - 0 - -
New York (excluding New York City) 205 404 14,307 17,011 5 6 65 104 - 1 1 1
New York City 254 692 27,505 24,413 2 4 49 65 - 0 - 1
Pennsylvania - 329 1,839 17,655 1 7 142 144 - 1 3 2
East North Central 171 2,568 86,554 105,769 1 22 420 512 - 1 6 5
Illinois - 711 20,708 29,992 - 5 78 108 - 0 - 1
Indiana - 381 11,885 13,422 - 4 89 88 - 1 2 1
Michigan 35 575 17,682 22,484 1 6 77 100 - 0 - 1
Ohio - 755 26,038 29,903 - 16 148 148 - 1 3 1
Wisconsin 136 267 10,241 9,968 - 3 28 68 - 1 1 1
West North Central 283 1,191 39,743 45,319 1 6 117 243 - 0 - -
Iowa - 160 5,840 6,696 - 1 2 2 - 0 - -
Kansas 14 114 2,232 5,410 - 2 6 43 - 0 - -
Minnesota - 244 9,108 10,018 - 1 1 59 - 0 - -
Missouri 216 723 15,344 15,882 1 5 69 92 - 0 - -
Nebraska 48 108 3,253 3,353 - 2 20 25 - 0 - -
North Dakota 5 50 1,455 1,621 - 2 6 5 - 0 - -
South Dakota - 71 2,511 2,339 - 2 13 17 - 0 - -
South Atlantic 920 3,335 130,901 138,451 - 19 508 695 - 1 1 1
Delaware - 92 1,493 1,400 - 2 6 7 - 0 - -
District of Columbia - 115 3,918 3,754 - 0 - 7 - 0 - -
Florida 410 1,047 43,189 39,033 - 10 211 199 - 1 1 -
Georgia - 547 19,783 22,755 - 8 102 126 - 0 - 1
Maryland - 287 10,194 11,642 - 4 50 77 - 0 - -
North Carolina - 655 20,689 27,367 - 3 39 133 - 0 - -
South Carolina 235 515 15,880 16,080 - 3 38 47 - 0 - -
Virginia 270 339 14,190 14,688 - 5 47 66 - 0 - -
West Virginia 5 49 1,565 1,732 - 2 15 33 - 0 - -
East South Central 286 2,206 52,421 51,953 6 9 186 211 - 1 1 2
Alabama 198 392 15,502 13,905 - 5 76 54 - 0 - 1
Kentucky - 1,424 7,554 6,753 3 2 30 36 - 0 - 1
Mississippi 88 302 11,654 13,364 - 2 24 29 - 1 1 -
Tennessee - 562 17,711 17,931 3 5 56 92 - 0 - -
West South Central 11 2,055 83,829 89,898 1 15 313 369 - 0 - 1
Arkansas - 193 6,782 7,676 1 3 44 42 - 0 - -
Louisiana - 386 15,004 14,943 - 5 68 61 - 0 - 1
Oklahoma 11 196 6,082 10,857 - 8 73 80 - 0 - -
Texas - 1,383 55,961 56,422 - 13 128 186 - 0 - -
Mountain 91 1,101 45,806 42,248 4 10 172 256 - 1 1 2
Arizona 30 402 17,304 15,786 1 4 60 91 - 1 1 -
Colorado - 282 9,954 9,375 - 0 - 51 - 0 - -
Idaho 6 52 1,133 1,432 - 3 19 16 - 0 - -
Montana - 42 1,362 1,643 - 2 16 13 - 0 - -
Nevada - 299 7,370 6,163 1 3 19 17 - 0 - -
New Mexico 4 128 4,661 4,475 - 2 20 30 - 0 - 1
Utah 47 92 3,550 2,993 2 3 36 34 - 0 - 1
Wyoming 4 20 472 381 - 1 2 4 - 0 - -
Pacific 417 2,249 103,324 96,984 - 9 62 93 - 1 1 -
Alaska - 56 1,745 1,915 - 2 12 12 - 0 - -
California 212 1,934 88,254 76,046 - 2 17 20 - 0 - -
Hawaii - 25 - 1,434 - 1 4 11 - 0 - -
Oregon 99 156 6,143 6,188 - 2 29 50 - 1 1 -
Washington 106 196 7,182 11,401 - 6 - - - 0 - -
U.S. Territories - 18 262 385 - 0 - - - 0 - -
American Samoa - 0 - - - 0 - - - 0 - -
Commonwealth of Northern Mariana Islands - 0 - - - 0 - - - 0 - -
Guam - 0 - - - 0 - - - 0 - -
Puerto Rico - 18 262 385 - 0 - - - 0 - -
U.S. Virgin Islands - 0 - - - 0 - - - 0 - -
Non-U.S. Residents - 10 41 7 - 0 - - - 0 - -
Total 2,745 14,331 605,522 653,878 21 73 2,122 2,885 - 2 14 15
  • 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.
  • Max: Maximum — Maximum case count during the previous 52 weeks.
  • * Case counts for reporting year 2021 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/docs/Readers-Guide-WONDER-Tables-20210421-508.pdf.
  • †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 as numbered tables. 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.