diff --git a/data-serving/reusable-data-service/poetry.lock b/data-serving/reusable-data-service/poetry.lock
index 38bb5cc8d..14672ce81 100644
--- a/data-serving/reusable-data-service/poetry.lock
+++ b/data-serving/reusable-data-service/poetry.lock
@@ -39,6 +39,22 @@ category = "main"
 optional = false
 python-versions = ">=2.7, !=3.0.*, !=3.1.*, !=3.2.*, !=3.3.*, !=3.4.*"
 
+[[package]]
+name = "dnspython"
+version = "2.2.1"
+description = "DNS toolkit"
+category = "main"
+optional = false
+python-versions = ">=3.6,<4.0"
+
+[package.extras]
+dnssec = ["cryptography (>=2.6,<37.0)"]
+curio = ["curio (>=1.2,<2.0)", "sniffio (>=1.1,<2.0)"]
+doh = ["h2 (>=4.1.0)", "httpx (>=0.21.1)", "requests (>=2.23.0,<3.0.0)", "requests-toolbelt (>=0.9.1,<0.10.0)"]
+idna = ["idna (>=2.1,<4.0)"]
+trio = ["trio (>=0.14,<0.20)"]
+wmi = ["wmi (>=1.5.1,<2.0.0)"]
+
 [[package]]
 name = "flask"
 version = "2.1.2"
@@ -95,6 +111,19 @@ category = "main"
 optional = false
 python-versions = ">=3.7"
 
+[[package]]
+name = "mongomock"
+version = "4.0.0"
+description = "Fake pymongo stub for testing simple MongoDB-dependent code"
+category = "dev"
+optional = false
+python-versions = "*"
+
+[package.dependencies]
+packaging = "*"
+sentinels = "*"
+six = "*"
+
 [[package]]
 name = "packaging"
 version = "21.3"
@@ -126,6 +155,26 @@ category = "dev"
 optional = false
 python-versions = ">=2.7, !=3.0.*, !=3.1.*, !=3.2.*, !=3.3.*, !=3.4.*"
 
+[[package]]
+name = "pymongo"
+version = "4.1.1"
+description = "Python driver for MongoDB <http://www.mongodb.org>"
+category = "main"
+optional = false
+python-versions = ">=3.6.2"
+
+[package.dependencies]
+dnspython = {version = ">=1.16.0,<3.0.0", optional = true, markers = "extra == \"srv\""}
+
+[package.extras]
+aws = ["pymongo-auth-aws (<2.0.0)"]
+encryption = ["pymongocrypt (>=1.2.0,<2.0.0)"]
+gssapi = ["pykerberos"]
+ocsp = ["pyopenssl (>=17.2.0)", "requests (<3.0.0)", "service-identity (>=18.1.0)", "certifi"]
+snappy = ["python-snappy"]
+srv = ["dnspython (>=1.16.0,<3.0.0)"]
+zstd = ["zstandard"]
+
 [[package]]
 name = "pyparsing"
 version = "3.0.9"
@@ -158,6 +207,22 @@ tomli = ">=1.0.0"
 [package.extras]
 testing = ["argcomplete", "hypothesis (>=3.56)", "mock", "nose", "pygments (>=2.7.2)", "requests", "xmlschema"]
 
+[[package]]
+name = "sentinels"
+version = "1.0.0"
+description = "Various objects to denote special meanings in python"
+category = "dev"
+optional = false
+python-versions = "*"
+
+[[package]]
+name = "six"
+version = "1.16.0"
+description = "Python 2 and 3 compatibility utilities"
+category = "dev"
+optional = false
+python-versions = ">=2.7, !=3.0.*, !=3.1.*, !=3.2.*"
+
 [[package]]
 name = "tomli"
 version = "2.0.1"
@@ -180,7 +245,7 @@ watchdog = ["watchdog"]
 [metadata]
 lock-version = "1.1"
 python-versions = "^3.10"
-content-hash = "109a053525e5bc2f974854c983cc181562de577ca845142e7d2669c736fb4abf"
+content-hash = "aba5456c54bd841f97bb57a925279e03b9dff4d15fe1411182cb268bc6680098"
 
 [metadata.files]
 atomicwrites = [
@@ -199,6 +264,10 @@ colorama = [
     {file = "colorama-0.4.5-py2.py3-none-any.whl", hash = "sha256:854bf444933e37f5824ae7bfc1e98d5bce2ebe4160d46b5edf346a89358e99da"},
     {file = "colorama-0.4.5.tar.gz", hash = "sha256:e6c6b4334fc50988a639d9b98aa429a0b57da6e17b9a44f0451f930b6967b7a4"},
 ]
+dnspython = [
+    {file = "dnspython-2.2.1-py3-none-any.whl", hash = "sha256:a851e51367fb93e9e1361732c1d60dab63eff98712e503ea7d92e6eccb109b4f"},
+    {file = "dnspython-2.2.1.tar.gz", hash = "sha256:0f7569a4a6ff151958b64304071d370daa3243d15941a7beedf0c9fe5105603e"},
+]
 flask = [
     {file = "Flask-2.1.2-py3-none-any.whl", hash = "sha256:fad5b446feb0d6db6aec0c3184d16a8c1f6c3e464b511649c8918a9be100b4fe"},
     {file = "Flask-2.1.2.tar.gz", hash = "sha256:315ded2ddf8a6281567edb27393010fe3406188bafbfe65a3339d5787d89e477"},
@@ -257,6 +326,10 @@ markupsafe = [
     {file = "MarkupSafe-2.1.1-cp39-cp39-win_amd64.whl", hash = "sha256:46d00d6cfecdde84d40e572d63735ef81423ad31184100411e6e3388d405e247"},
     {file = "MarkupSafe-2.1.1.tar.gz", hash = "sha256:7f91197cc9e48f989d12e4e6fbc46495c446636dfc81b9ccf50bb0ec74b91d4b"},
 ]
+mongomock = [
+    {file = "mongomock-4.0.0-py2.py3-none-any.whl", hash = "sha256:cac9c68dd7715b4ab6ae510c20b4676e5ce751f0a5434d5ad8236d974e2a2b69"},
+    {file = "mongomock-4.0.0.tar.gz", hash = "sha256:b1832c3748d47444c18867373e5cea754c2e6f644a0cfbfd667f178f68bdecfc"},
+]
 packaging = [
     {file = "packaging-21.3-py3-none-any.whl", hash = "sha256:ef103e05f519cdc783ae24ea4e2e0f508a9c99b2d4969652eed6a2e1ea5bd522"},
     {file = "packaging-21.3.tar.gz", hash = "sha256:dd47c42927d89ab911e606518907cc2d3a1f38bbd026385970643f9c5b8ecfeb"},
@@ -269,6 +342,91 @@ py = [
     {file = "py-1.11.0-py2.py3-none-any.whl", hash = "sha256:607c53218732647dff4acdfcd50cb62615cedf612e72d1724fb1a0cc6405b378"},
     {file = "py-1.11.0.tar.gz", hash = "sha256:51c75c4126074b472f746a24399ad32f6053d1b34b68d2fa41e558e6f4a98719"},
 ]
+pymongo = [
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+    {file = "pymongo-4.1.1-cp39-cp39-macosx_10_9_x86_64.whl", hash = "sha256:fb4445e3721720c5ca14c0650f35c263b3430e6e16df9d2504618df914b3fb99"},
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+    {file = "pymongo-4.1.1-cp39-cp39-manylinux1_x86_64.whl", hash = "sha256:571a3e1ef4abeb4ac719ac381f5aada664627b4ee048d9995e93b4bcd0f70601"},
+    {file = "pymongo-4.1.1-cp39-cp39-manylinux2014_aarch64.whl", hash = "sha256:c03eb43d15c8af58159e7561076634d565530aaacaf48cf4e070c3501e88a372"},
+    {file = "pymongo-4.1.1-cp39-cp39-manylinux2014_i686.whl", hash = "sha256:30d35a8855f328a85e5002f0908b24e500efdf8f5f78b73098995ce111baa2a9"},
+    {file = "pymongo-4.1.1-cp39-cp39-manylinux2014_ppc64le.whl", hash = "sha256:33a5693e8d1fbb7743b7e867d43c1095652a0c6fedddab6cefe6020bee2ca393"},
+    {file = "pymongo-4.1.1-cp39-cp39-manylinux2014_s390x.whl", hash = "sha256:a35f1937b0560587d478fd2259a6d4f66cf511c9d28e90b52b183745eaa77d95"},
+    {file = "pymongo-4.1.1-cp39-cp39-manylinux2014_x86_64.whl", hash = "sha256:4fd5c4f25d8d488ee5701c3ec786f52907dca653b47ce8709bcc2bfb0f5506ae"},
+    {file = "pymongo-4.1.1-cp39-cp39-manylinux_2_17_aarch64.manylinux2014_aarch64.whl", hash = "sha256:db8a9cbe965c7343feab2e2bf9a3771f303f8a7ca401dececb6ef28e06b3b18c"},
+    {file = "pymongo-4.1.1-cp39-cp39-manylinux_2_17_ppc64le.manylinux2014_ppc64le.whl", hash = "sha256:7f55a602d55e8f0feafde533c69dfd29bf0e54645ab0996b605613cda6894a85"},
+    {file = "pymongo-4.1.1-cp39-cp39-manylinux_2_17_s390x.manylinux2014_s390x.whl", hash = "sha256:a4a35e83abfdac7095430e1c1476e0871e4b234e936f4a7a7631531b09a4f198"},
+    {file = "pymongo-4.1.1-cp39-cp39-manylinux_2_17_x86_64.manylinux2014_x86_64.whl", hash = "sha256:32e785c37f6a0e844788c6085ea2c9c0c528348c22cebe91896705a92f2b1b26"},
+    {file = "pymongo-4.1.1-cp39-cp39-manylinux_2_5_i686.manylinux1_i686.manylinux_2_17_i686.manylinux2014_i686.whl", hash = "sha256:bc62ba37bcb42e4146b853940b65a2de31c2962d2b6da9bc3ce28270d13b5c4e"},
+    {file = "pymongo-4.1.1-cp39-cp39-manylinux_2_5_i686.manylinux1_i686.whl", hash = "sha256:d86511ef8217822fb8716460aaa1ece31fe9e8a48900e541cb35acb7c35e9e2e"},
+    {file = "pymongo-4.1.1-cp39-cp39-manylinux_2_5_x86_64.manylinux1_x86_64.whl", hash = "sha256:e4956384340eec7b526149ac126c8aa11d32441cb3ce77a690cb4821d0d0635c"},
+    {file = "pymongo-4.1.1-cp39-cp39-win32.whl", hash = "sha256:3139c9ddee379c22a9109a0b3bf4cdb64597db2bbd3909f7a2825b47226977a4"},
+    {file = "pymongo-4.1.1-cp39-cp39-win_amd64.whl", hash = "sha256:f0aea377b9dfc166c8fa05bb158c30ee3d53d73f0ed2fc05ba6c638d9563422f"},
+    {file = "pymongo-4.1.1.tar.gz", hash = "sha256:d7b8f25c9b0043cbaf77b8b895814e33e7a3c807a097377c07e1bd49946030d5"},
+]
 pyparsing = [
     {file = "pyparsing-3.0.9-py3-none-any.whl", hash = "sha256:5026bae9a10eeaefb61dab2f09052b9f4307d44aee4eda64b309723d8d206bbc"},
     {file = "pyparsing-3.0.9.tar.gz", hash = "sha256:2b020ecf7d21b687f219b71ecad3631f644a47f01403fa1d1036b0c6416d70fb"},
@@ -277,6 +435,13 @@ pytest = [
     {file = "pytest-7.1.2-py3-none-any.whl", hash = "sha256:13d0e3ccfc2b6e26be000cb6568c832ba67ba32e719443bfe725814d3c42433c"},
     {file = "pytest-7.1.2.tar.gz", hash = "sha256:a06a0425453864a270bc45e71f783330a7428defb4230fb5e6a731fde06ecd45"},
 ]
+sentinels = [
+    {file = "sentinels-1.0.0.tar.gz", hash = "sha256:7be0704d7fe1925e397e92d18669ace2f619c92b5d4eb21a89f31e026f9ff4b1"},
+]
+six = [
+    {file = "six-1.16.0-py2.py3-none-any.whl", hash = "sha256:8abb2f1d86890a2dfb989f9a77cfcfd3e47c2a354b01111771326f8aa26e0254"},
+    {file = "six-1.16.0.tar.gz", hash = "sha256:1e61c37477a1626458e36f7b1d82aa5c9b094fa4802892072e49de9c60c4c926"},
+]
 tomli = [
     {file = "tomli-2.0.1-py3-none-any.whl", hash = "sha256:939de3e7a6161af0c887ef91b7d41a53e7c5a1ca976325f429cb46ea9bc30ecc"},
     {file = "tomli-2.0.1.tar.gz", hash = "sha256:de526c12914f0c550d15924c62d72abc48d6fe7364aa87328337a31007fe8a4f"},
diff --git a/data-serving/reusable-data-service/pyproject.toml b/data-serving/reusable-data-service/pyproject.toml
index 46e1d063c..e00717e98 100644
--- a/data-serving/reusable-data-service/pyproject.toml
+++ b/data-serving/reusable-data-service/pyproject.toml
@@ -7,9 +7,11 @@ authors = ["Global.health <info@global.health>"]
 [tool.poetry.dependencies]
 python = "^3.10"
 Flask = "^2.1.2"
+pymongo = {extras = ["srv"], version = "^4.1.1"}
 
 [tool.poetry.dev-dependencies]
 pytest = "^7.1.2"
+mongomock = "^4.0.0"
 
 [build-system]
 requires = ["poetry-core>=1.0.0"]
diff --git a/data-serving/reusable-data-service/reusable_data_service/__init__.py b/data-serving/reusable-data-service/reusable_data_service/__init__.py
index 7bc40804a..54eeb86fb 100644
--- a/data-serving/reusable-data-service/reusable_data_service/__init__.py
+++ b/data-serving/reusable-data-service/reusable_data_service/__init__.py
@@ -2,4 +2,5 @@
 
 from .model.case import Case
 from .controller.case_controller import CaseController
-from .main import app
+from .stores.mongo_store import MongoStore
+from .main import app, main, set_up_controllers
diff --git a/data-serving/reusable-data-service/reusable_data_service/main.py b/data-serving/reusable-data-service/reusable_data_service/main.py
index d7562aaca..030d14f43 100644
--- a/data-serving/reusable-data-service/reusable_data_service/main.py
+++ b/data-serving/reusable-data-service/reusable_data_service/main.py
@@ -1,3 +1,28 @@
-from flask import Flask
+from flask import Flask, request
+from . import CaseController, MongoStore
+
+import os
+
 
 app = Flask(__name__)
+case_controller = None # Will be set up in main()
+
+@app.route('/api/case/<id>')
+def get_case(id):
+    return case_controller.get_case(id)
+
+def set_up_controllers():
+    global case_controller
+    # TODO choose which store to load from configuration
+    mongo_connection_string = os.environ.get('MONGO_CONNECTION')
+    mongo_database = os.environ.get('MONGO_DB')
+    mongo_collection = os.environ.get('MONGO_CASE_COLLECTION')
+    mongo_store = MongoStore(mongo_connection_string, mongo_database, mongo_collection)
+    case_controller = CaseController(mongo_store)
+
+def main():
+    set_up_controllers()
+    app.run(host='0.0.0.0', port=8080)
+
+if __name__ == '__main__':
+    main()
\ No newline at end of file
diff --git a/data-serving/reusable-data-service/reusable_data_service/stores/mongo_store.py b/data-serving/reusable-data-service/reusable_data_service/stores/mongo_store.py
new file mode 100644
index 000000000..9c936d43c
--- /dev/null
+++ b/data-serving/reusable-data-service/reusable_data_service/stores/mongo_store.py
@@ -0,0 +1,25 @@
+import pymongo
+from json import loads
+from bson.json_util import dumps
+from bson.objectid import ObjectId
+
+class MongoStore:
+    """A line list store backed by mongodb."""
+    def __init__(self, connection_string: str, database_name: str, collection_name: str):
+        self.client = pymongo.MongoClient(connection_string)
+        self.database_name = database_name
+        self.collection_name = collection_name
+
+    def get_client(self):
+        return self.client
+    
+    def get_database(self):
+        return self.get_client()[self.database_name]
+
+    def get_case_collection(self):
+        return self.get_database()[self.collection_name]
+
+    def case_by_id(self, id: str):
+        case = self.get_case_collection().find_one({"_id": ObjectId(id)})
+        # case includes BSON fields like ObjectID - convert into JSON for use by the app
+        return loads(dumps(case))
\ No newline at end of file
diff --git a/data-serving/reusable-data-service/tests/test_case_end_to_end.py b/data-serving/reusable-data-service/tests/test_case_end_to_end.py
new file mode 100644
index 000000000..99c7f53fd
--- /dev/null
+++ b/data-serving/reusable-data-service/tests/test_case_end_to_end.py
@@ -0,0 +1,31 @@
+import pytest
+import os
+import mongomock
+import pymongo
+
+from reusable_data_service import app, set_up_controllers
+
+@pytest.fixture
+def client_with_patched_mongo(monkeypatch):
+    # configure controllers
+    monkeypatch.setenv('MONGO_CONNECTION_STRING', 'mongodb://localhost/27017') # will be unused
+    monkeypatch.setenv('MONGO_DB', 'outbreak')
+    monkeypatch.setenv('MONGO_CASE_COLLECTION', 'cases')
+    db = mongomock.MongoClient()
+    def fake_mongo(connection_string):
+        return db
+    monkeypatch.setattr('pymongo.MongoClient', fake_mongo)
+    set_up_controllers()
+    app.config['TESTING'] = True
+    client = app.test_client()
+    yield client
+
+def test_get_case_with_known_id(client_with_patched_mongo):
+    # insert a case
+    db = pymongo.MongoClient('mongodb://localhost/27017')
+    case_id = db['outbreak']['cases'].insert_one({"confirmation_date": "2021-12-31T01:23:45.678Z"}).inserted_id
+    response = client_with_patched_mongo.get(f'/api/case/{str(case_id)}')
+    result = response.get_json()
+    assert response.status_code == 200
+    assert result is not None
+    assert result['confirmation_date'] == '2021-12-31T01:23:45.678Z'