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 18, 2021 (Week 50)
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 4,353 14,492 609,746 639,043 31 64 2,065 2,851 - 2 14 14
New England 3 304 9,922 13,741 - 7 78 128 - 0 - -
Connecticut - 129 60 4,409 - 2 10 29 - 0 - -
Maine - 17 383 487 - 1 12 9 - 0 - -
Massachusetts - 197 7,643 7,098 - 4 36 54 - 0 - -
New Hampshire 2 21 477 441 - 1 3 16 - 0 - -
Rhode Island - 129 1,224 1,176 - 2 13 11 - 0 - -
Vermont 1 8 135 130 - 2 4 9 - 0 - -
Middle Atlantic 1,007 1,565 68,107 67,471 8 13 254 376 - 1 4 4
New Jersey 144 230 8,961 9,567 - 1 10 65 - 0 - -
New York (excluding New York City) 285 404 14,102 16,665 3 6 59 103 - 1 1 1
New York City 282 692 26,932 23,915 2 4 47 65 - 0 - 1
Pennsylvania 296 438 18,112 17,324 3 7 138 143 - 1 3 2
East North Central 206 2,568 85,776 103,328 - 16 405 505 - 1 6 5
Illinois 30 711 20,708 29,363 - 5 78 107 - 0 - 1
Indiana - 381 11,885 13,085 - 4 83 86 - 1 2 1
Michigan 63 575 17,505 21,915 - 6 74 97 - 0 - 1
Ohio - 755 25,587 29,249 - 16 142 148 - 1 3 1
Wisconsin 113 267 10,091 9,716 - 3 28 67 - 1 1 1
West North Central 379 1,191 39,420 44,357 2 6 116 242 - 0 - -
Iowa 18 160 5,840 6,537 - 1 2 2 - 0 - -
Kansas 14 127 2,218 5,283 - 2 6 43 - 0 - -
Minnesota 13 244 9,108 9,810 - 1 1 58 - 0 - -
Missouri 278 723 15,110 15,582 1 5 68 92 - 0 - -
Nebraska 38 108 3,201 3,265 1 2 20 25 - 0 - -
North Dakota 10 50 1,432 1,588 - 2 6 5 - 0 - -
South Dakota 8 71 2,511 2,292 - 2 13 17 - 0 - -
South Atlantic 927 3,335 129,407 135,255 6 19 506 683 - 1 1 1
Delaware 18 92 1,493 1,323 - 2 6 7 - 0 - -
District of Columbia - 115 3,918 3,668 - 0 - 7 - 0 - -
Florida 620 1,047 42,579 38,024 6 10 211 197 - 1 1 -
Georgia - 547 19,783 22,211 - 8 102 123 - 0 - 1
Maryland - 287 10,194 11,408 - 4 50 75 - 0 - -
North Carolina - 655 20,689 26,786 - 3 39 130 - 0 - -
South Carolina 286 515 15,645 15,751 - 3 38 47 - 0 - -
Virginia - 339 13,582 14,390 - 5 45 64 - 0 - -
West Virginia 3 49 1,524 1,694 - 2 15 33 - 0 - -
East South Central 371 2,206 51,888 50,735 2 8 174 209 - 0 - 2
Alabama 246 392 15,311 13,522 1 5 73 54 - 0 - 1
Kentucky - 1,424 7,554 6,594 - 2 27 36 - 0 - 1
Mississippi 125 302 11,450 13,113 - 2 23 28 - 0 - -
Tennessee - 562 17,573 17,506 1 5 51 91 - 0 - -
West South Central 187 2,078 78,413 87,820 9 15 311 364 - 0 - 1
Arkansas 58 193 6,782 7,506 1 3 43 42 - 0 - -
Louisiana 103 386 15,004 14,588 - 5 68 61 - 0 - 1
Oklahoma 26 200 5,994 10,657 3 8 73 79 - 0 - -
Texas - 1,376 50,633 55,069 5 13 127 182 - 0 - -
Mountain 96 1,101 44,646 41,361 2 8 160 251 - 1 2 1
Arizona - 398 16,432 15,441 1 4 58 90 - 1 1 -
Colorado - 282 9,954 9,159 - 1 - 50 - 0 - -
Idaho 19 52 1,127 1,412 - 2 17 16 - 0 - -
Montana 13 42 1,362 1,605 - 2 16 13 - 0 - -
Nevada - 299 7,242 6,057 - 3 18 15 - 1 1 -
New Mexico 10 128 4,580 4,406 - 2 18 30 - 0 - 1
Utah 51 92 3,491 2,904 1 3 31 33 - 1 - -
Wyoming 3 20 458 377 - 1 2 4 - 0 - -
Pacific 1,177 2,249 102,167 94,975 2 9 61 93 - 1 1 -
Alaska - 56 1,638 1,887 1 2 12 12 - 0 - -
California 846 1,934 87,407 74,443 - 2 16 20 - 0 - -
Hawaii - 28 - 1,406 - 1 4 11 - 0 - -
Oregon 156 153 6,046 6,043 1 2 29 50 - 1 1 -
Washington 175 205 7,076 11,196 - 6 - - - 0 - -
U.S. Territories - 18 262 367 - 0 - - - 0 - -
American Samoa - 0 - - - 0 - - - 0 - -
Commonwealth of Northern Mariana Islands - 0 - - - 0 - - - 0 - -
Guam - 0 - - - 0 - - - 0 - -
Puerto Rico - 18 262 367 - 0 - - - 0 - -
U.S. Virgin Islands - 0 - - - 0 - - - 0 - -
Non-U.S. Residents - 10 41 7 - 0 - - - 0 - -
Total 4,353 14,504 610,049 639,417 31 64 2,065 2,851 - 2 14 14
  • 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.