---
title: COVID-19 Precision Prevention - Digital Twin Model
emoji: 🦠
colorFrom: blue
colorTo: green
sdk: streamlit
sdk_version: 1.32.0
app_file: app_combined.py
pinned: false
---

# COVID-19 Precision Prevention: Digital Twin Model

Interactive 3D visualization system for precision COVID-19 prevention strategies using viral load (Ct value) data.

## Features

- **Tab 1: Contact Tracing (Alpha Variant)** - Determine optimal retrospective tracing duration based on confirmed case Ct values
- **Tab 2: Quarantine & Isolation (Omicron Variant)** - Optimize quarantine duration based on Ct values and booster vaccination status
- **AI Assistant** - GPT-4 powered intelligent analysis and recommendations
- **3D Visualization** - Interactive exploration of effectiveness across different scenarios

## Data Source

Based on research from: "A Bayesian Digital Twin Model for Precision Control of Emerging Infectious Diseases Using Viral Load Data" (Lin et al., 2025)

## Usage

1. Enter your OpenAI API Key in the sidebar
2. Adjust parameters (Ct value, days, vaccination status)
3. Explore 3D visualizations
4. Get AI-powered strategy recommendations