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ERRATUM:  Weeks 1-52 data for Haemophilus influenzae, invasive disease in Table 1 were updated on Monday, February 11, 2019.
Labels for "Nontypeable" and "Non-b serotype" were incorrectly placed resulting in the numbers being switched for these two rows. They are now correct.

National Notifiable Infectious Diseases: Weekly Tables

TABLE 1. Weekly cases* of selected infrequently reported notifiable diseases (<1,000 cases reported during the preceding year), excluding U.S. territories -- United States, week ending April 21, 2018 (WEEK 16) †
Disease Total cases reported for previous years
Current
week		 Cum
2018		 5-year
weekly
average§		 2017 2016 2015 2014 2013 States reporting cases
during current week (Count)
Anthrax - - - - - - - -  
Arboviral diseases, neuroinvasive and non-neuroinvasive ¶                  
Chikungunya virus disease 1 8 2 152 247 896 NN NN ME (1 )
Eastern equine encephalitis virus disease - - - 5 7 6 8 8  
Jamestown Canyon virus disease - - 0 70 15 11 11 22  
La Crosse virus disease - - - 62 35 55 80 85  
Powassan virus disease - - 0 33 22 7 8 12  
St. Louis encephalitis virus disease - - 0 11 8 23 10 1  
Western equine encephalitis virus disease - - - - - - - -  
Botulism                  
Total - 44 4 154 201 195 161 152  
Foodborne - 2 1 18 31 37 15 4  
Infant - 38 3 117 144 138 127 136  
Other (wound and unspecified) - 4 0 19 26 20 19 12  
Brucellosis 1 11 3 123 127 126 92 99 NY (1 )
Chancroid - 2 0 7 11 11 - -  
Cholera - - 0 4 15 5 5 14  
Cyclosporiasis ¶ 2 14 1 1,121 535 645 388 784 WY (1 ), AZ (1 )
Diphtheria - - 0 - - - 1 -  
Haemophilus influenzae,
invasive disease (age <5 years)		                  
Serotype b 2 7 1 24 30 29 40 31 OH (1 ), WA (1 )
Non-b serotype 2 46 2 162 159 135 266 233 TX (1 ), NM (1 )
Nontypeable - 45 4 155 196 175 128 141  
Unknown serotype 2 90 4 238 187 167 39 34 MS (1 ), AK (1 )
Hansen's disease ¶ - 5 1 109 78 89 88 81  
Hantavirus infection, non-hantavirus pulmonary syndrome ¶ - - 0 1 6 3 NN NN  
Hantavirus pulmonary syndrome ¶ - 2 1 12 31 21 32 21  
Hemolytic uremic syndrome, post-diarrheal ¶ 1 20 4 299 307 274 250 329 NM (1 )
Hepatitis B, perinatal infection - 5 1 31 34 37 47 48  
Influenza-associated pediatric mortality ¶, ** 4 150 4 126 82 130 141 160 GA (1 ), NM (1 ), CA (1 ), NYC (1 )
Leptospirosis ¶ - 15 1 60 78 40 38 NN  
Listeriosis 6 125 11 840 786 768 769 735 MD (1 ), VA (2 ), FL (2 ), TX (1 )
Measles †† - 43 5 120 85 188 667 187  
Meningococcal disease                  
Serogroups ACWY - 27 3 81 126 120 123 142  
Serogroup B - 15 2 73 86 111 89 99  
Other serogroups 2 9 0 19 21 21 25 17 WA (2 )
Unknown serogroup 2 60 4 180 142 120 196 298 FL (1 ), OR (1 )
Novel influenza A virus infections §§ - - 0 67 23 7 3 21  
Paratyphoid fever ¶¶ 1 6 NA NA NA NA NA NA NY (1 )
Plague - - 0 1 4 16 10 4  
Poliomyelitis, paralytic - - - - - - - 1  
Polio virus infection, nonparalytic ¶ - - - - - - - -  
Psittacosis ¶ - 1 0 5 12 4 8 6  
Q fever ¶                  
Total 2 26 4 155 164 156 168 170  
Acute 1 20 3 121 132 122 132 137 NE (1 )
Chronic 1 6 1 34 32 34 36 33 NE (1 )
Rabies, human - 1 - 2 - 2 1 2  
Severe acute respiratory syndrome-associated coronavirus disease (SARS CoV) - - - - - - - -  
Smallpox - - - - - - - -  
Streptococcal toxic shock syndrome ¶ 3 106 9 347 283 335 259 224 VT (1 ), NY (1 ), OH (1 )
Syphilis, congenital - 121 9 781 633 493 458 348  
Toxic shock syndrome (other than streptococcal) ¶ - 7 1 30 40 64 59 71  
Trichinellosis ¶ - - 0 8 26 14 14 22  
Tularemia 2 7 2 219 230 314 180 203 ID (2 )
Typhoid fever 2 64 7 341 376 367 349 338 NY (1 ), VA (1 )
Vancomycin-intermediate Staphylococcus aureus 2 19 4 105 108 183 212 248 PA (1 ), OH (1 )
Vancomycin-resistant Staphylococcus aureus - - - - - 3 - -  
Viral hemorrhagic fevers ***                  
Crimean-Congo hemorrhagic fever virus - - - - - - NP NP  
Ebola virus - - - - - - 4 NP  
Guanarito virus - - - - - - NP NP  
Junin virus - - - - - - NP NP  
Lassa virus - - - - - 1 1 NP  
Lujo virus - - - - - - NP NP  
Machupo virus - - - - - - NP NP  
Marburg virus - - - - - - NP NP  
Sabia virus - - - - - - NP NP  
Yellow fever - - - - - - - -  
  • -: 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.
  • NA: Not available — CDC does not have data because of nomenclature changes in how data are reported for nationally notifiable conditions.
  • NN: Not nationally notifiable — This condition was not designated as being nationally notifiable.
  • NP: Nationally notifiable but not published — CDC does not have data because of changes in how conditions are categorized.
  • Cum: Cumulative year-to-date counts.
  • * Case counts for reporting years 2017 and 2018 are provisional and subject to change. Data for years 2013 through 2016 are finalized.
  • † This table does not include cases from the U.S. territories.
  • § Calculated by summing the incidence counts for the current week, the 2 weeks preceding the current week, and the 2 weeks following the current week, for a total of 5 preceding years. Additional information is available at https://wwwn.cdc.gov/nndss/document/5yearweeklyaverage.pdf.
  • ¶ Not reportable in all jurisdictions. Data from states where the condition is not reportable are excluded from this table, except for the arboviral diseases and influenza-associated pediatric mortality. Reporting exceptions are available at http://wwwn.cdc.gov/nndss/downloads.html.
  • ** Since October 1, 2017, 160 influenza-associated pediatric deaths occurring during the 2017-18 season have been reported.
  • †† No measles cases were reported for the current week.
  • §§ Novel influenza A virus infections are human infections with influenza A viruses that are different from currently circulating human seasonal influenza viruses. With the exception of one avian lineage influenza A (H7N2) virus, all novel influenza A virus infections reported to CDC since 2013 have been variant influenza viruses.
  • ¶¶ Prior to 2018, cases of paratyphoid fever were included with salmonellosis cases (see Table II).
  • *** Prior to 2015, CDC's National Notifiable Diseases Surveillance System (NNDSS) did not receive electronic data about incident cases of specific viral hemorrhagic fevers; instead data were collected in aggregate as "viral hemorrhagic fevers'. NNDSS was updated beginning in 2015 to receive data for each of the viral hemorrhagic fevers listed.
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 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://wwwn.cdc.gov/nndss/conditions/. 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/infectious-tables.html.
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