# SiteCheck Health & Travel – CDC FluView Influenza Data

> SiteCheck Health & Travel – CDC FluView Influenza Data is a paid API for AI agents from api.healthtravel-api.workers.dev, paid per call via x402, $0.002/call, status unknown (last checked 2026-10-29).

Returns CDC FluView weekly influenza-like illness (ILI) and weighted ILI statistics for the US or a specific region over a given epiweek range (up to 12 weeks), sourced via Delphi Epidata.

## Facts

- Endpoint: GET https://api.healthtravel-api.workers.dev/api/health/fluview-influenza-cdc?utm_source=zero.xyz
- Price: $0.002/call
- Payment: x402
- Status: unknown
- Last checked: 2026-10-29
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/sitecheck-health-travel-cdc-fluview-influenza-data-19a6257e
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_cdy2DPcbue1S93O2W9J-u

Status and success rate cover calls made through Zero and Zero's own probes. Third-party monitors may report differently.

## How to call it through Zero

Zero handles the 402 payment challenge and records the run. With the Zero CLI installed (`npm i -g @zeroxyz/cli`):

```sh
zero fetch --capability sitecheck-health-travel-cdc-fluview-influenza-data-19a6257e
```

Example prompt: Pull CDC FluView influenza-like illness data for Vermont from epiweek 202440 through 202451 — I want the ILI percentage, weighted ILI, and patient and provider counts for each week.

## When to prefer this

Use this endpoint when you need official CDC FluView ILI surveillance data — weekly ILI percentages, weighted ILI, patient counts, and provider counts — for the US nationally or a specific state, over a defined window of up to 12 epiweeks. Prefer it over general health data sources when you specifically need CDC-sourced, epiweek-structured influenza surveillance metrics rather than outbreak maps or real-time case counts.

## Known failure modes

- Invalid region code (not 'nat' or a valid 2-5 character state code) returns an error
- Epiweek range exceeds 12 weeks returns a validation error
- Malformed epiweek format (not YYYYWW) causes a bad request
- Future epiweeks or weeks with no CDC data yet may return empty results
- epiweekTo before epiweekFrom returns an error

## How this service works

CDC FluView weekly influenza-like illness (ILI) and weighted ILI for the US or a region (served via Delphi Epidata, which mirrors CDC FluView): epiweek, ILI %, weighted ILI %, patient and provider counts. Give an epiweek range of up to 12 weeks. No outbreak maps.

## Output

A list of weekly records for the requested region and epiweek range, each containing: epiweek (YYYYWW), ILI percentage, weighted ILI percentage, patient count, and provider count — sourced from CDC FluView via Delphi Epidata.

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "$schema": "https://json-schema.org/draft/2020-12/schema",
 "required": [
  "input"
 ],
 "properties": {
  "input": {
   "type": "object",
   "required": [
    "type",
    "method"
   ],
   "properties": {
    "type": {
     "type": "string",
     "const": "http"
    },
    "method": {
     "enum": [
      "GET"
     ],
     "type": "string"
    },
    "queryParams": {
     "type": "object",
     "required": [
      "region",
      "epiweekFrom",
      "epiweekTo"
     ],
     "properties": {
      "region": {
       "type": "string",
       "description": "'nat' for US national, or a state code like 'vt' (lowercase letters, 2 to 5 characters)"
      },
      "epiweekTo": {
       "type": "string",
       "description": "Last epiweek, YYYYWW, at most 12 weeks after the first"
      },
      "epiweekFrom": {
       "type": "string",
       "description": "First epiweek, YYYYWW, e.g. 202440"
      }
     }
    }
   },
   "additionalProperties": false
  },
  "output": {
   "type": "object",
   "required": [
    "type"
   ],
   "properties": {
    "type": {
     "type": "string"
    },
    "example": {
     "type": "object"
    }
   }
  }
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/sitecheck-health-travel-cdc-fluview-influenza-data-19a6257e/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from api.healthtravel-api.workers.dev](https://www.zero.xyz/host/api.healthtravel-api.workers.dev/llms.txt)