List all immunizations

GET/healthcare/{connection_id}/immunization

Parameters

Returns

HealthcareImmunizationarray

idstring

Unique identifier for the immunization

created_atdate-time

When the immunization record was created (ISO-8601 / YYYY-MM-DDTHH:MM:SSZ format)

updated_atdate-time

When the immunization record was last updated (ISO-8601 / YYYY-MM-DDTHH:MM:SSZ format)

patient_idstring

The patient who was immunized

encounter_idstring

The encounter in which the vaccine was administered

practitioner_idstring

The practitioner who administered the vaccine

location_idstring

Where the vaccine was administered

namestring

Human-readable name of the vaccine

codes array

Codings for the vaccine (e.g. CVX)

status enum

Valid values:

"COMPLETED"

"NOT_DONE"

"ENTERED_IN_ERROR"

"OTHER"

Status of the immunization

administered_atdate-time

When the vaccine was administered (ISO-8601 / YYYY-MM-DDTHH:MM:SSZ format)

lot_numberstring

Vaccine lot number

expires_atdate-time

Vaccine expiration date (ISO-8601 / YYYY-MM-DDTHH:MM:SSZ format)

notesstring

Free-text notes about the immunization

metadata array

raw

Raw data from integration

Errors

Errors return the HTTP status code and a JSON body with statusCode, error (the short label) and message (a human-readable detail).

{
  "statusCode": 429,
  "error": "Too Many Requests",
  "message": "Too many requests to unified.to API; max requests per minute: N"
}

Status	Error	Meaning
`400`	Bad Request	The request was malformed or failed validation.
`401`	Unauthorized	The connection is likely broken; re-authorize it.
`403`	Forbidden	The connection is missing permissions or scopes.
`404`	Not Found	The requested resource does not exist.
`429`	Too Many Requests	Rate limit exceeded (see the two sources below).
`500`	Internal Server Error	An unexpected error occurred.
`501`	Not Implemented	Not supported by this integration.

Errors from the underlying integration pass through: the integration's status comes back as ours (429, 401, 403, 404 or 5xx), usually with its message. When the integration's error body is unclear, Unified extracts what it can and returns a clearer message.

429 Too Many Requests

A 429 has two possible sources:

The integration's own rate limit, passed through.
Unified's workspace limit: a rolling 60 seconds, set by plan, with the message Too many requests to unified.to API; max requests per minute: N.

const options = {
  method: 'GET',
  url: 'https://api.unified.to/healthcare/5de520f96e439b002043d8dc/immunization',
  headers: {
    authorization: 'bearer .....'
  },
  params: {
    limit: 50,
    offset: 0,
    updated_gte: '2026-10-12T03:24:38.891Z',
    sort: 'updated_at',
    order: 'asc',
    query: '',
    patient_id: '',
    fields: '',
    raw: '',
  }
};

const results = await axios.request(options);

Code Samples

Node.js SDK

import { UnifiedTo } from '@unified-api/typescript-sdk';

const sdk = new UnifiedTo({
    security: {
        jwt: '<YOUR_API_KEY_HERE>',
    },
});

const connectionId = '5de520f96e439b002043d8dc';

const results = await sdk.healthcare.listHealthcareImmunizations({ connectionId, 
    limit: 50,
    offset: 0,
    updated_gte: '2026-10-12T03:24:38.891Z',
    sort: 'updated_at',
    order: 'asc',
    query: '',
    patient_id: '',
    fields: '',
    raw: '',
 });

Node.js (axios)

const options = {
  method: 'GET',
  url: 'https://api.unified.to/healthcare/5de520f96e439b002043d8dc/immunization',
  headers: {
    authorization: 'bearer .....'
  },
  params: {
    limit: 50,
    offset: 0,
    updated_gte: '2026-10-12T03:24:38.891Z',
    sort: 'updated_at',
    order: 'asc',
    query: '',
    patient_id: '',
    fields: '',
    raw: '',
  }
};

const results = await axios.request(options);

Java

AsyncHttpClient client = new DefaultAsyncHttpClient();

client.prepare("GET", "https://api.unified.to/healthcare/5de520f96e439b002043d8dc/immunization?limit=50&offset=0&updated_gte=2026-10-12T03:24:38.891Z&sort=updated_at&order=asc&query=&patient_id=&fields=&raw=")
  .setHeader("accept", "application/json")
  .setHeader("authorization", ".....")
  .execute()
  .toCompletableFuture()
  .thenAccept(System.out::println)
  .join();

client.close();

Go

import (
	"fmt"
	"net/http"
	"io/ioutil"
)

url := `https://api.unified.to/healthcare/5de520f96e439b002043d8dc/immunization?limit=50&offset=0&updated_gte=2026-10-12T03:24:38.891Z&sort=updated_at&order=asc&query=&patient_id=&fields=&raw=

req, _ := http.NewRequest("GET", url, nil)

req.Header.Add("accept", "application/json")
req.Header.Add("authorization", ".....")

res, _ := http.DefaultClient.Do(req)

defer res.Body.Close()
body, _ := ioutil.ReadAll(res.Body)

Python

import requests

url = "https://api.unified.to/healthcare/5de520f96e439b002043d8dc/immunization?limit=50&offset=0&updated_gte=2026-10-12T03:24:38.891Z&sort=updated_at&order=asc&query=&patient_id=&fields=&raw="

headers = {
    "accept": "application/json",
    "authorization": "....."
}

response = requests.get(url, headers=headers)

PHP

$curl = curl_init();

curl_setopt_array($curl, [
  CURLOPT_URL => "https://api.unified.to/healthcare/5de520f96e439b002043d8dc/immunization?limit=50&offset=0&updated_gte=2026-10-12T03:24:38.891Z&sort=updated_at&order=asc&query=&patient_id=&fields=&raw=",
  CURLOPT_RETURNTRANSFER => true,
  CURLOPT_ENCODING => "",
  CURLOPT_MAXREDIRS => 10,
  CURLOPT_TIMEOUT => 30,
  CURLOPT_HTTP_VERSION => CURL_HTTP_VERSION_1_1,
  CURLOPT_CUSTOMREQUEST => "GET",
  CURLOPT_HTTPHEADER => [
    "accept: application/json",
    "authorization: ....."
  ],
]);

Ruby

require 'uri'
require 'net/http'
require 'openssl'

url = URI("https://api.unified.to/healthcare/5de520f96e439b002043d8dc/immunization?limit=50&offset=0&updated_gte=2026-10-12T03:24:38.891Z&sort=updated_at&order=asc&query=&patient_id=&fields=&raw=")

http = Net::HTTP.new(url.host, url.port)
http.use_ssl = true

request = Net::HTTP::Get.new(url)
request["accept"] = 'application/json'
request["authorization"] = '....'

response = http.request(request)
puts response.read_body

cURL

curl --request GET \
  --url 'https://api.unified.to/healthcare/5de520f96e439b002043d8dc/immunization?limit=50&offset=0&updated_gte=2026-10-12T03:24:38.891Z&sort=updated_at&order=asc&query=&patient_id=&fields=&raw=' \
  --header 'accept: application/json' \
  --header 'authorization: .....'

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