CDC WONDER & FluView

Weekly US respiratory-disease surveillance — influenza, COVID-19 and RSV hospital admissions, deaths and seasonal-baseline deviation by jurisdiction and week, straight from CDC's open data feeds.

Public health data — not medical advice.

⏰ Run this as a monitoring subscription (recommended)

NHSN updates every Friday. Schedule a weekly sweep (0 8 * * 1) and catch each new reporting week as it posts.

📊 What you get

Clean JSON, one record per disease × week × jurisdiction:

• disease, week (ISO YYYY-Www), year, week_ending_date
• state, state_code — 50 states + DC + PR + the USA national aggregate
• age_group — all, or one of 0-4, 5-17, 18-49, 50-64, 65+
• hospitalization_count — confirmed new admissions. For an age group this is the CDC-published per-age admission column, not a modelled split; null where CDC published no value for that jurisdiction-week
• hospitalization_rate_per_100k, admission_level — as published by NHSN (all ages)
• death_count — NCHS provisional weekly deaths for that state and week (COVID-19 and influenza; null for RSV, and null when an age group is selected because CDC publishes no weekly age-split death feed)
• vs_5yr_seasonal_avg_pct — deviation from the mean admissions for the same MMWR week in prior years, computed from the NHSN weekly timeseries. null unless at least two prior-year observations exist
• positivity_rate — admissions-per-100k normalised against the jurisdiction's peak in the requested window (a 0–1 surveillance-pressure index, not a laboratory percent-positivity)
• case_count — null. CDC no longer publishes weekly confirmed case counts by state for these pathogens; this actor does not estimate one
• source_admissions, source_deaths, source_baseline, fluview_dashboard_url — provenance for every row

Sources: CDC NHSN Hospital Respiratory Data (vdzy-6i9v, current weeks), CDC NHSN weekly timeseries (mpgq-jmmr, history and age strata), NCHS Provisional Death Counts (r8kw-7aab).

Pricing: $0.05 per disease-week record (Pay-Per-Event) — about 20 records per $1. You are charged only for records actually delivered; a blocked source fails the run, and an empty result returns 0 rows and charges nothing.

⚠️ Coverage note

The current NHSN admissions feed retains roughly the last 20 reporting weeks, so weeks_back beyond that returns what CDC currently publishes. The seasonal baseline reaches back to 2020 via the NHSN timeseries.

🤖 Use with AI agents

Point Claude, the OpenAI Agents SDK, an n8n flow or any MCP-aware client at it and pull official records on demand.

Agentic payments (x402): Supports agentic payment via x402 — agents can call this actor with USDC, no API key required.

🔗 Related actors

FDA & public-health records family:

OpenFDA Drug · Drug Approvals · Drug Shortages · Purple Book · Warning Letters/483 · Pharma Pipeline · Adverse Events · Medical Devices

Product-safety recalls: NHTSA Recalls · NHTSA Defects · NHTSA Safety · CPSC Recalls

Agent front door — Healthcare & FDA MCP: Healthcare & FDA MCP

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Public official records, assembled for research and monitoring.