CDC NNDSS notifiable-disease intelligence (weekly)
Weekly notifiable-disease intelligence from the CDC's keyless NNDSS Weekly Data endpoint (U.S. public domain): the latest complete MMWR week as a disease-by-jurisdiction panel (120 disease labels x 57 reporting areas — 50 states + DC + NYC + 5 territories; aggregate rows excluded). Agent-side intelligence: flag-aware measure parsing ('-' -> 0, 'N'/'U' -> null, never imputed), outbreak_flag when the current-week count exceeds the previous-52-week maximum, YTD year-over-year ratios, a documented 0-100 disease_burden_score (40% national weekly cases, 35% outbreak-state share, 25% national YTD, min-maxed across the week's diseases) with dense rank and quartile tiers s1..s4, plus per-jurisdiction weekly totals, outbreak counts and top disease. Cadence: weekly; as_of is the Saturday ending the published MMWR week, so identical input yields an identical content hash. Caveats: provisional counts subject to revision; nulls where jurisdictions don't report make national sums lower bounds; the score is a relative within-week gauge, not a risk assessment. Sample use: filter outbreak_flag for this week's exceedances, or order by disease_burden_rank for the heaviest national burdens.
- Rows
- 6,840
- Columns
- 26
- Source cadence
- Weekly
- Last refreshed
- Sep 27, 2026
- Theme
- health
| Column | Type | Description |
|---|---|---|
| mmwr_year | string | MMWR surveillance year of the published week. |
| mmwr_week | string | MMWR surveillance week number (weeks start Sunday). |
| disease_label | string | NNDSS disease/condition label verbatim (e.g. 'Chlamydia trachomatis infection'). |
| disease_group | string | Label text before the first comma (e.g. 'Arboviral diseases'); the whole label when there is no comma. |
| state_name | string | Reporting jurisdiction (50 states + DC + New York City + 5 territories). |
| state_code | string | Jurisdiction code (USPS for states/DC/territories; NYC for New York City, which reports separately). |
| country_code | string | ISO 3166-1 alpha-3 (USA for all NNDSS jurisdictions). |
| week_cases | float | Current-week case count (NNDSS m1). '-' flag -> 0; 'N'/'U' flags -> null (not reportable/unavailable, never imputed as zero). (unit: cases) |
| prev_52wk_max | float | Previous-52-week maximum weekly count (NNDSS m2); same flag semantics as week_cases. (unit: cases) |
| ytd_current | float | Cumulative year-to-date cases, current year (NNDSS m3); same flag semantics as week_cases. (unit: cases) |
| ytd_prior | float | Cumulative year-to-date cases, prior year (NNDSS m4); same flag semantics as week_cases. (unit: cases) |
| outbreak_flag | boolean | True when week_cases exceeds prev_52wk_max (both non-null) — the table's built-in outbreak signal. |
| ytd_yoy_ratio | float | ytd_current / ytd_prior; null when the prior-year count is null or zero. |
| disease_nat_week_cases | float | National weekly cases for the disease (sum over the 57 jurisdictions; nulls excluded, so a lower bound where jurisdictions don't report). (unit: cases) |
| disease_nat_ytd | float | National year-to-date cases for the disease. (unit: cases) |
| disease_outbreak_states | integer | Number of jurisdictions with outbreak_flag for this disease. (unit: count) |
| disease_outbreak_share | float | Share of the 57 jurisdictions with outbreak_flag for this disease. |
| disease_burden_score | float | Documented 0-100 burden score, min-maxed across the week's diseases: 100*(0.40*mm(log1p(national weekly cases)) + 0.35*mm(outbreak-state share) + 0.25*mm(log1p(national YTD))). |
| disease_burden_rank | integer | Dense rank of the burden score across the week's diseases (1 = heaviest). |
| disease_burden_tier | string | Quartile tier of the burden score: s1 (heaviest) .. s4. |
| state_week_cases | float | Total weekly cases across all diseases in this jurisdiction. (unit: cases) |
| state_outbreak_diseases | integer | Number of diseases with outbreak_flag in this jurisdiction. (unit: count) |
| state_top_disease | string | Disease with the most weekly cases in this jurisdiction (alphabetical tiebreak). |
| source_url | string | Canonical NNDSS Socrata API query for this (week, disease) cell (per-row provenance). |
| as_of | string | Saturday ending the published MMWR week. Identical feed state yields an identical snapshot hash. (unit: date) |
| row_hash | string | Deterministic content hash over the row's content fields. |
First 10 sample rows — a preview, not the complete dataset.
| mmwr_year | mmwr_week | disease_label | disease_group | state_name | state_code | country_code | week_cases | prev_52wk_max | ytd_current | ytd_prior | outbreak_flag | ytd_yoy_ratio | disease_nat_week_cases | disease_nat_ytd | disease_outbreak_states | disease_outbreak_share | disease_burden_score | disease_burden_rank | disease_burden_tier | state_week_cases | state_outbreak_diseases | state_top_disease | source_url | as_of | row_hash |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 2026 | 37 | Hepatitis C, chronic, Probable | Hepatitis C | Alaska | AK | USA | 8 | 15 | 139 | 30 | false | 4.633 | 787 | 24,765 | 3 | 0.053 | 80.9 | 1 | s1 | 131 | 1 | Chlamydia trachomatis infection | https://data.cdc.gov/resource/x9gk-5huc.json?$where=year%3D%272026%27%20AND%20week%3D%2737%27%20AND%20label%3D%27Hepatitis%20C%2C%20chronic%2C%20Probable%27 | 2026-09-19 | ffe6dfe8549ae33b |
| 2026 | 37 | Hepatitis C, chronic, Probable | Hepatitis C | Alabama | AL | USA | — | — | — | — | false | — | 787 | 24,765 | 3 | 0.053 | 80.9 | 1 | s1 | 849 | 0 | Chlamydia trachomatis infection | https://data.cdc.gov/resource/x9gk-5huc.json?$where=year%3D%272026%27%20AND%20week%3D%2737%27%20AND%20label%3D%27Hepatitis%20C%2C%20chronic%2C%20Probable%27 | 2026-09-19 | 385b9d187e73b21f |
| 2026 | 37 | Hepatitis C, chronic, Probable | Hepatitis C | Arkansas | AR | USA | 1 | 32 | 566 | 787 | false | 0.719 | 787 | 24,765 | 3 | 0.053 | 80.9 | 1 | s1 | 306 | 0 | Chlamydia trachomatis infection | https://data.cdc.gov/resource/x9gk-5huc.json?$where=year%3D%272026%27%20AND%20week%3D%2737%27%20AND%20label%3D%27Hepatitis%20C%2C%20chronic%2C%20Probable%27 | 2026-09-19 | 3b3b2dea15168302 |
| 2026 | 37 | Hepatitis C, chronic, Probable | Hepatitis C | American Samoa | AS | USA | — | 0 | — | — | false | — | 787 | 24,765 | 3 | 0.053 | 80.9 | 1 | s1 | 0 | 0 | — | https://data.cdc.gov/resource/x9gk-5huc.json?$where=year%3D%272026%27%20AND%20week%3D%2737%27%20AND%20label%3D%27Hepatitis%20C%2C%20chronic%2C%20Probable%27 | 2026-09-19 | 7c7aa01f5392b74f |
| 2026 | 37 | Hepatitis C, chronic, Probable | Hepatitis C | Arizona | AZ | USA | — | — | — | — | false | — | 787 | 24,765 | 3 | 0.053 | 80.9 | 1 | s1 | 1,277 | 0 | Chlamydia trachomatis infection | https://data.cdc.gov/resource/x9gk-5huc.json?$where=year%3D%272026%27%20AND%20week%3D%2737%27%20AND%20label%3D%27Hepatitis%20C%2C%20chronic%2C%20Probable%27 | 2026-09-19 | da46bfe9f59dfd21 |
| 2026 | 37 | Hepatitis C, chronic, Probable | Hepatitis C | California | CA | USA | — | 65 | — | 2,533 | false | — | 787 | 24,765 | 3 | 0.053 | 80.9 | 1 | s1 | 3,983 | 0 | Chlamydia trachomatis infection | https://data.cdc.gov/resource/x9gk-5huc.json?$where=year%3D%272026%27%20AND%20week%3D%2737%27%20AND%20label%3D%27Hepatitis%20C%2C%20chronic%2C%20Probable%27 | 2026-09-19 | f6455d0cfe0c55dc |
| 2026 | 37 | Hepatitis C, chronic, Probable | Hepatitis C | Colorado | CO | USA | 30 | 47 | 848 | 350 | false | 2.423 | 787 | 24,765 | 3 | 0.053 | 80.9 | 1 | s1 | 552 | 0 | Chlamydia trachomatis infection | https://data.cdc.gov/resource/x9gk-5huc.json?$where=year%3D%272026%27%20AND%20week%3D%2737%27%20AND%20label%3D%27Hepatitis%20C%2C%20chronic%2C%20Probable%27 | 2026-09-19 | eade0e85071f45d1 |
| 2026 | 37 | Hepatitis C, chronic, Probable | Hepatitis C | Connecticut | CT | USA | — | 0 | — | — | false | — | 787 | 24,765 | 3 | 0.053 | 80.9 | 1 | s1 | 229 | 0 | Chlamydia trachomatis infection | https://data.cdc.gov/resource/x9gk-5huc.json?$where=year%3D%272026%27%20AND%20week%3D%2737%27%20AND%20label%3D%27Hepatitis%20C%2C%20chronic%2C%20Probable%27 | 2026-09-19 | 4176aa5c9d8d543a |
| 2026 | 37 | Hepatitis C, chronic, Probable | Hepatitis C | District of Columbia | DC | USA | — | 3 | 34 | 46 | false | 0.739 | 787 | 24,765 | 3 | 0.053 | 80.9 | 1 | s1 | 0 | 0 | — | https://data.cdc.gov/resource/x9gk-5huc.json?$where=year%3D%272026%27%20AND%20week%3D%2737%27%20AND%20label%3D%27Hepatitis%20C%2C%20chronic%2C%20Probable%27 | 2026-09-19 | 772ef4693293ca5d |
| 2026 | 37 | Hepatitis C, chronic, Probable | Hepatitis C | Delaware | DE | USA | — | — | — | — | false | — | 787 | 24,765 | 3 | 0.053 | 80.9 | 1 | s1 | 0 | 0 | — | https://data.cdc.gov/resource/x9gk-5huc.json?$where=year%3D%272026%27%20AND%20week%3D%2737%27%20AND%20label%3D%27Hepatitis%20C%2C%20chronic%2C%20Probable%27 | 2026-09-19 | 66421fcc38c4f3d1 |
- Current
20260927T071206Z-ad47568efb7b · sha256 ad47568efb7b…
6,840 rows · first snapshot
Point any LLM at the metadata endpoint — the documentation above is machine-readable too (JSON-LD + Croissant).
curl "https://datazimuts.com/v1/datasets/cdc_nndss_disease_intel/nndss_disease_weekly" | jq '{title, rows, columns_count, license}'import requests
ds = requests.get("https://datazimuts.com/v1/datasets/cdc_nndss_disease_intel/nndss_disease_weekly").json()
print(ds["title"], ds["rows"], "rows")
# Sample rows for an LLM context window
for row in ds.get("sample_rows", [])[:5]:
print(row)API endpoint: https://datazimuts.com/v1/datasets/cdc_nndss_disease_intel/nndss_disease_weekly
Tip: fetch /llms.txt for the full machine-readable catalog.
Where this data comes from and what was made from it. Other people's work shows as counts; only shared projects are named.
Cite this snapshot
Pinned to snapshot 20260927T071206Z-ad47568efb7b and its content hash, so readers get exactly the data you used.
CDC National Notifiable Diseases Surveillance System. (2026). CDC NNDSS notifiable-disease intelligence (weekly) [Data set, snapshot 20260927T071206Z-ad47568efb7b, sha256 ad47568efb7b]. Datazimuts. Retrieved 2026-09-27, from https://datazimuts.com/en/datasets/cdc_nndss_disease_intel/nndss_disease_weekly?snapshot=20260927T071206Z-ad47568efb7b
@misc{dz_cdc_nndss_disease_intel_nndss_disease_we_ad47568e,
title = {{CDC NNDSS notifiable-disease intelligence (weekly)}},
author = {{CDC National Notifiable Diseases Surveillance System}},
year = {2026},
publisher = {Datazimuts},
howpublished = {\url{https://datazimuts.com/en/datasets/cdc_nndss_disease_intel/nndss_disease_weekly?snapshot=20260927T071206Z-ad47568efb7b}},
note = {Snapshot 20260927T071206Z-ad47568efb7b, sha256 ad47568efb7bb21d989d0f5f7151e7124a2f638c2d50c7b51177f7106cf43586; accessed 2026-09-27}
}Embed a table or a chart
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<iframe src="https://datazimuts.com/embed/chart?dataset=cdc_nndss_disease_intel%2Fnndss_disease_weekly&lang=en&theme=auto&snapshot=20260927T071206Z-ad47568efb7b&x=mmwr_year&y=week_cases&agg=avg" title="CDC NNDSS notifiable-disease intelligence (weekly)" width="100%" height="380" style="border:0" loading="lazy"></iframe>
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