As of January 2025, weekly NNDSS PDF and text table formats will be available via CDC Stacks, a public online data repository instead of on WONDER. The HTML format has been updated to improve user experience and data can be found on data.cdc.gov, a publicly available catalog of data resources. This change reflects efforts to make CDC data more responsive and efficient. For questions, email NNDSSWeb@cdc.gov.

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

(Weekly data are available from Week 01, 1996 through Week 51, 2024)
Year Week
Tables available for Week 21, 2020
Table 1 Weekly reported cases of notifiable diseases, by geography - United States and Territories
Table1a Anthrax; Arboviral diseases (Export Data) (PDF)
Table1b Arboviral diseases (Export Data) (PDF)
Table1c Arboviral diseases (Export Data) (PDF)
Table1d Arboviral diseases; Babesiosis (Export Data) (PDF)
Table1e Botulism (Export Data) (PDF)
Table1f Brucellosis; Campylobacteriosis; Candida auris, clinical (Export Data) (PDF)
Table1g Carbapenemase-producing carbapenem-resistant Enterobacteriaceae; Chancroid; Chlamydia trachomatis infection (Export Data) (PDF)
Table1h Cholera; Coccidioidomycosis (Export Data) (PDF)
Table1i Cryptosporidiosis; Cyclosporiasis (Export Data) (PDF)
Table1j Dengue virus infections (Export Data) (PDF)
Table1k Ehrlichiosis and Anaplasmosis (Export Data) (PDF)
Table1l Ehrlichiosis and Anaplasmosis; Giardiasis (Export Data) (PDF)
Table1m Gonorrhea; Haemophilus influenzae, invasive disease (Export Data) (PDF)
Table1n Haemophilus influenzae, invasive disease (Export Data) (PDF)
Table1o Hansen's disease; Hantavirus infection, non-hantavirus pulmonary syndrome; Hantavirus pulmonary syndrome (Export Data) (PDF)
Table1p Hemolytic uremic syndrome post-diarrheal; Hepatitis A, acute; Hepatitis B, acute (Export Data) (PDF)
Table1q Hepatitis B, perinatal infection; Hepatitis C, acute (Export Data) (PDF)
Table1r Hepatitis C, perinatal infection; Influenza-associated pediatric mortality (Export Data) (PDF)
Table1s Invasive pneumococcal disease, all ages (Export Data) (PDF)
Table1t Invasive pneumococcal disease, age <5 years; Legionellosis (Export Data) (PDF)
Table1u Leptospirosis; Listeriosis (Export Data) (PDF)
Table1v Malaria; Measles (Export Data) (PDF)
Table1w Meningococcal disease (Export Data) (PDF)
Table1x Meningococcal disease (Export Data) (PDF)
Table1y Mumps; Novel Influenza A virus infections (Export Data) (PDF)
Table1z Pertussis; Plague; Poliomyelitis, paralytic (Export Data) (PDF)
Table1aa Poliovirus infection, nonparalytic; Psittacosis (Export Data) (PDF)
Table1bb Q fever (Export Data) (PDF)
Table1cc Rabies (Export Data) (PDF)
Table1dd Rubella; Rubella, congenital syndrome (Export Data) (PDF)
Table1ee Salmonella Paratyphi infection; Salmonella Typhi infection; Salmonellosis (excluding Salmonella Typhi infection and Salmonella Paratyphi infection) (Export Data) (PDF)
Table1ff Severe acute respiratory syndrome-associated coronavirus disease; Shiga toxin-producing Escherichia coli (STEC); Shigellosis (Export Data) (PDF)
Table1gg Smallpox; Streptococcal toxic shock syndrome (Export Data) (PDF)
Table1hh Syphilis (Export Data) (PDF)
Table1ii Tetanus; Toxic shock syndrome (other than Streptococcal); Trichinellosis (Export Data) (PDF)
Table1jj Tuberculosis; Tularemia (Export Data) (PDF)
Table1kk Vancomycin-intermediate Staphylococcus aureus; Vancomycin-resistant Staphylococcus aureus; Varicella morbidity (Export Data) (PDF)
Table1ll Vibriosis (any species of the family Vibrionaceae, other than toxigenic Vibrio cholerae O1 or O139) (Export Data) (PDF)
Table1mm Viral hemorrhagic fevers (Export Data) (PDF)
Table1nn Viral hemorrhagic fevers (Export Data) (PDF)
Table1oo Viral hemorrhagic fevers (Export Data) (PDF)
Table1pp Yellow fever; Zika virus disease, non-congenital (Export Data) (PDF)
Table2 Starting week 1 of year 2020 tuberculosis data is presented in Table 1jj, Table 2 has been discontinued. (n/a) (n/a)
Figure 1 Starting week 1 of year 2020 Figure 1 has been discontinued. (n/a) (n/a)
See also Annual Tables
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.