# US Notifiable Disease Surveillance Tracker — CDC NNDSS (`m_ctim/notifiable-disease-surveillance-tracker`) Actor

Look up weekly reported case counts for any CDC-notifiable disease (measles, salmonellosis, pertussis, and hundreds more) by state or nationally, with a comparison to the previous year, via the official CDC NNDSS Weekly Data API.

- **URL**: https://apify.com/m\_ctim/notifiable-disease-surveillance-tracker.md
- **Developed by:** [Timothy Kelvin](https://apify.com/m_ctim) (community)
- **Categories:** Other
- **Stats:** 2 total users, 1 monthly users, 100.0% runs succeeded, 0 bookmarks
- **User rating**: No ratings yet

## Pricing

Pay per usage

This Actor is paid per platform usage. The Actor is free to use, and you only pay for the Apify platform usage, which gets cheaper the higher subscription plan you have.

Learn more: https://docs.apify.com/actors/running/actors-in-store.md#pay-per-usage

## What's an Apify Actor?

Actors are web data automations that power AI and operations. They run on the Apify platform to scrape websites, process data, connect APIs, and automate workflows.
In Batch mode, an Actor accepts a well-defined JSON input, performs an action which can take anything from a few seconds to a few hours,
and optionally produces a well-defined JSON output, datasets with results, or files in key-value store.
In Standby mode, an Actor provides a web server which can be used as a website, API, or an MCP server.
Actors are written with capital "A".

## How to integrate an Actor?

If asked about integration, you help developers integrate Actors into their projects.
You adapt to their stack and deliver integrations that are safe, well-documented, and production-ready.
The best way to integrate Actors is as follows.

- **AI agents and MCP clients** — the [Apify MCP server](https://docs.apify.com/integrations/mcp.md) at `https://mcp.apify.com` (remote, streamable HTTP, OAuth on first use).
- **Agentic workflows and local Actor development** — [Agent Skills](https://apify.com/.well-known/agent-skills/index.json) with the [Apify CLI](https://docs.apify.com/cli/docs.md): `npm install -g apify-cli`, then `apify login`.
- **JavaScript/TypeScript projects** — the official [JS/TS client](https://docs.apify.com/api/client/js/docs.md): `npm install apify-client`.
- **Python projects** — the official [Python client](https://docs.apify.com/api/client/python/docs.md): `pip install apify-client`.
- **Any other language** — the [REST API](https://docs.apify.com/api/v2.md).

For usage examples, see the [API](#api) section below.

For more details, see Apify documentation as [Markdown index](https://docs.apify.com/llms.txt) and [Markdown full-text](https://docs.apify.com/llms-full.txt).

# README

## US Notifiable Disease Surveillance Tracker — CDC NNDSS

Look up weekly reported case counts for any CDC-notifiable disease —
measles, salmonellosis, pertussis, and hundreds more — by state or
nationally, via the official [CDC NNDSS Weekly
Data](https://data.cdc.gov/NNDSS/NNDSS-Weekly-Data/x9gk-5huc) API.
Each record includes the current week's count alongside the previous
52-week maximum and a year-over-year cumulative comparison.

Built for public-health, epidemiology, and news-monitoring teams
tracking a specific disease's trend without pulling CDC's own MMWR
tables by hand.

### Input

```json
{
  "diseaseKeyword": "Measles",
  "area": "U.S. Residents",
  "maxResults": 20
}
```

| Field | Type | Description |
|---|---|---|
| `diseaseKeyword` | string | Case-insensitive match against CDC's official disease label, e.g. `"measles"`, `"salmonella"`, `"pertussis"`. A broad keyword can match several related labels (`"measles"` matches both "Measles, Indigenous" and "Measles, Imported"). Default `"Measles"`. |
| `area` | string | A US state name, HHS region name, or `"U.S. Residents"` for the national total. Must match CDC's reporting-area name exactly. Default `"U.S. Residents"`. |
| `maxResults` | number | Maximum number of weekly records to return, most recent week first. Default `20`, max `200`. |

### Output

One record per disease-label/week match:

```json
{
  "disease": "Measles, Indigenous",
  "reportingArea": "U.S. Residents",
  "mmwrYear": "2026",
  "mmwrWeek": "32",
  "currentWeekCount": 122,
  "currentWeekFlag": null,
  "previous52WeekMax": 255,
  "previous52WeekMaxFlag": null,
  "cumulativeYtdCurrentYear": 2309,
  "cumulativeYtdCurrentYearFlag": null,
  "cumulativeYtdPreviousYear": 1265,
  "cumulativeYtdPreviousYearFlag": null
}
```

A `null` count with a non-null flag means CDC suppressed or didn't
report a value for that cell that week (e.g. a state that doesn't
require reporting for that disease) — this is CDC's own data quality
signal, passed through rather than hidden or defaulted to zero.

### How it works

Direct calls to the official CDC NNDSS Weekly Data API on
`data.cdc.gov` (Socrata) — no proxy, no key, no scraping. CDC
notifiable disease surveillance data is a US federal public health
work product and in the public domain.

### Pricing note

Billed per **search** (one run), not per record returned.

### Related products

- [Medical Device Adverse Event Tracker](https://github.com/timmKal01/medical-device-adverse-event-tracker) — FDA MAUDE reports, a different federal health-data family
- [Consumer Complaint Tracker](https://github.com/timmKal01/consumer-complaint-tracker) — CFPB financial complaints, same Socrata-platform mechanism

# Actor input Schema

## `diseaseKeyword` (type: `string`):

Free-text, case-insensitive match against CDC's official disease label, e.g. "measles", "salmonella", "pertussis". A broad keyword can match several related labels (e.g. "measles" matches both "Measles, Indigenous" and "Measles, Imported").

## `area` (type: `string`):

A US state name, HHS region name, or "U.S. Residents" for the national total. Must match CDC's reporting-area name exactly (e.g. "California", "New England", "U.S. Residents").

## `maxResults` (type: `integer`):

Maximum number of weekly records to return, most recent week first.

## Actor input object example

```json
{
  "diseaseKeyword": "Measles",
  "area": "U.S. Residents",
  "maxResults": 20
}
```

# Actor output Schema

## `results` (type: `string`):

No description

# API

You can run this Actor programmatically using our API. Below are code examples in JavaScript, Python, and CLI, as well as the OpenAPI specification and MCP server setup.

## JavaScript example

```javascript
import { ApifyClient } from 'apify-client';

// Initialize the ApifyClient with your Apify API token
// Replace the '<YOUR_API_TOKEN>' with your token
const client = new ApifyClient({
    token: '<YOUR_API_TOKEN>',
});

// Prepare Actor input
const input = {
    "diseaseKeyword": "Measles",
    "area": "U.S. Residents"
};

// Run the Actor and wait for it to finish
const run = await client.actor("m_ctim/notifiable-disease-surveillance-tracker").call(input);

// Fetch and print Actor results from the run's dataset (if any)
console.log('Results from dataset');
console.log(`💾 Check your data here: https://console.apify.com/storage/datasets/${run.defaultDatasetId}`);
const { items } = await client.dataset(run.defaultDatasetId).listItems();
items.forEach((item) => {
    console.dir(item);
});

// 📚 Want to learn more 📖? Go to → https://docs.apify.com/api/client/js/docs

```

## Python example

```python
from apify_client import ApifyClient

# Initialize the ApifyClient with your Apify API token
# Replace '<YOUR_API_TOKEN>' with your token.
client = ApifyClient("<YOUR_API_TOKEN>")

# Prepare the Actor input
run_input = {
    "diseaseKeyword": "Measles",
    "area": "U.S. Residents",
}

# Run the Actor and wait for it to finish
run = client.actor("m_ctim/notifiable-disease-surveillance-tracker").call(run_input=run_input)

# Fetch and print Actor results from the run's dataset (if there are any)
print(f"💾 Check your data here: https://console.apify.com/storage/datasets/{run.default_dataset_id}")
for item in client.dataset(run.default_dataset_id).iterate_items():
    print(item)

# 📚 Want to learn more 📖? Go to → https://docs.apify.com/api/client/python/docs/quick-start

```

## CLI example

```bash
echo '{
  "diseaseKeyword": "Measles",
  "area": "U.S. Residents"
}' |
apify call m_ctim/notifiable-disease-surveillance-tracker --silent --output-dataset

```

## MCP server setup

```json
{
    "mcpServers": {
        "apify": {
            "type": "http",
            "url": "https://mcp.apify.com/?tools=fetch-actor-details,m_ctim/notifiable-disease-surveillance-tracker"
        }
    }
}

```

The hosted server signs you in with OAuth on first connect, so no API token belongs in this config. Clients without OAuth support can send an `Authorization: Bearer <APIFY_API_TOKEN>` header instead, using a token from API & Integrations in Apify Console (https://console.apify.com/settings/integrations).

## OpenAPI specification

Download the OpenAPI definition: https://api.apify.com/v2/actors/NSDqcS5yqgugbuGHT/builds/6G1LVdB1M3KJFYgsW/openapi.json