> For the complete documentation index, see [llms.txt](https://doc.duaer.com/zh/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://doc.duaer.com/zh/getting-started/cdc-data.md).

# 在 Duaer 里查美国疾控中心开放数据

在 Duaer 里：data.cdc.gov 上的 CDC 开放数据集：先按关键词查找数据集，再读取某个数据集的行，如流感死亡或疫苗接种率。一次成功查询用 1 额度。
## 能拿到什么

Duaer 数据市场里的「美国疾控中心开放数据」：data.cdc.gov 上的 CDC 开放数据集：先按关键词查找数据集，再读取某个数据集的行，如流感死亡或疫苗接种率。查到结果时用 1 额度，结果交给数字组织的下一个节点。

从节点创建器选 Duaer 数据 → 美国疾控中心开放数据，或打开 [数据市场](/zh/getting-started/data-market.md)。相关：[WHO 卫生统计](/zh/getting-started/who-gho.md)、[美国医院（CMS）](/zh/getting-started/cms-hospitals.md)。

## 适合做什么

- 查找美国疾控中心关于某疾病的开放数据集。
- 按数据集编号读取监测数据行。

## 在画布里检索

1. 打开节点创建器，选 Duaer 数据 → CDC open data。
2. 填 Find Datasets（如 influenza），或填 Dataset（如 ynw2-4viq）。
3. Limit 默认 10，最大 20。执行。

查到结果才扣 1 额度；没有结果、输入有误或上游失败都不扣。

## 用 API 调用

- GET https://api.duaer.com/v1/data/cdc-data?words=influenza
- Authorization: Bearer <Duaer key>

下方是与数据市场「复制技能」相同的英文技能，含参数、示例与返回字段。

## 调用技能（英文）

与数据市场「复制技能」一致。

```
---
name: duaer-cdc-data
description: >-
  Duaer CDC open data. CDC open datasets on data.cdc.gov: find datasets by words, then read rows from one dataset, such as influenza deaths or vaccination coverage.
  One successful search uses 1 Duaer credit.
---

# Duaer CDC open data

Duaer CDC open data works in two steps: search the data.cdc.gov catalog for datasets, then read rows from one dataset by its id.

## When to use

- Find the CDC dataset for a disease or indicator.
- Pull the first rows of a CDC dataset into a table.

## When not to use

- Global health statistics. Use https://skills.duaer.com/who-gho.md.
- Hospitals and clinicians. Use https://skills.duaer.com/cms-hospitals.md.

## Call

`GET https://api.duaer.com/v1/data/cdc-data?words=influenza`

Header: `Authorization: Bearer <Duaer key>`

Use an account key or a model API key.

Get a Duaer key: https://skills.duaer.com/keys.md

## Parameters

Provide `words`, or `dataset`.

- `words` — Words such as influenza deaths or vaccination coverage.
- `dataset` — Optional. Dataset id such as ynw2-4viq to read its rows instead.
- `limit` — Optional. Rows to return, from 1 to 20. Default 10.

## Examples

- `GET https://api.duaer.com/v1/data/cdc-data?words=influenza` — CDC datasets about influenza.
- `GET https://api.duaer.com/v1/data/cdc-data?dataset=ynw2-4viq&limit=5` — rows of the provisional flu, pneumonia, and COVID-19 deaths dataset.

## Result

The response is `{ "items": [...] }`. Each item has `source`, `title`, `url`, and `summary`, plus:

- Dataset search: `dataset`, `description`, `publisher`, `category`, `columns`, `dataUpdated`, `downloads`.
- Dataset rows: `dataset` plus the dataset columns as fields.

Fields without a value are left out.

## Credits

A search that returns at least one row uses 1 credit.
An empty search, a search that finds nothing, or a failed search uses 0.
Wrong input returns 400 with a message and uses 0.
No remaining credits returns 402 and does not search.
A missing key returns 401.

## Related

- https://skills.duaer.com/who-gho.md — Duaer WHO health statistics
- https://skills.duaer.com/cms-hospitals.md — Duaer US hospitals (CMS)

```
## Questions

### Duaer 的美国疾控中心开放数据检索扣多少额度？

查到结果时扣 1 额度；没有结果或出错不扣。

### Duaer 美国疾控中心开放数据的 Dataset 编号怎么找？

先只填 Find Datasets 调用 Duaer 美国疾控中心开放数据，从结果里复制 dataset 编号，再用它读取数据行。

## 相关

- [在 Duaer 里查 WHO 卫生统计](https://doc.duaer.com/zh/getting-started/who-gho.md)
- [在 Duaer 里查美国医院（CMS）](https://doc.duaer.com/zh/getting-started/cms-hospitals.md)