HealthWise

Multi-agent healthcare system: trusted health assistant for people, outbreak detector for health authorities.

Main features:

• Multi-agent system (LangGraph, LangChain)
• Chatbot responses are grounded ONLY on reliable sources:
  • nhs.uk
  • medlineplus.gov
  • cdc.gov
• Outbreak detector for health authorities - analysis panel for health authorities with visualisations and forecasting

Demo video

Click above to watch the demo video!

Presentation video

Click above to watch the presentation video!

Tech stack

• Backend: Python, FastAPI, LangGraph, LangChain
• Frontend: Streamlit
• LLM: OpenAI (gpt-4o and gpt-4o-mini)
• Search engine: Tavily
• Visualisation: Plotly
• Virtual environment: Matplotlib
• Data storage: MongoDB

Security considerations

• The app is seperated into two parts: chatbot for people and analysis panel for health authorities.
  • Chatbot is public and can be used by anyone. It can ONLY WRITE to the database, not read from it.
  • Analysis panel is supposed to be accessed only by health authorities. It can ONLY READ from the database.

Installation

Requirements

• Poetry
• Filled .env file (copy .env.example, rename it, and fill in the missing API keys)

Install dependencies

poetry install

If you encounter the error ImportError: cannot import name 'TavilyClient' from 'tavily', run the following command:

pip install tavily-python

then run:

pip install --upgrade tavily-python

Run the app

Start the backend server

poetry shell
python backend/server.py

Start the frontend app

streamlit run HealthWise.py

Run pre-commit hooks

For now it's only black formatter.

pre-commit run --all-files