# 🦠 WIA-BIO-013: Microbiome Standard

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> **Standard ID:** WIA-BIO-013
> **Version:** 1.0.0
> **Status:** Active
> **Category:** BIO / Biotechnology
> **Color:** Teal (#14B8A6)

---

## 🌟 Overview

The WIA-BIO-013 standard defines the computational and analytical framework for microbiome research, including sample collection, sequencing methods, bioinformatics analysis, diversity metrics, and clinical applications.

**홍익인간 (弘益人間) - Benefit All Humanity** - This standard aims to advance microbiome science through standardized data formats, analysis pipelines, and clinical interpretation protocols that benefit human health worldwide.

## 🎯 Key Features

- **16S rRNA Sequencing**: Bacterial identification and taxonomic profiling
- **Shotgun Metagenomics**: Whole-genome sequencing for functional analysis
- **Metabolomics Integration**: Link microbial communities to metabolite profiles
- **Diversity Analysis**: Alpha and beta diversity metrics with statistical validation
- **Taxonomic Classification**: QIIME2, MetaPhlAn, and Kraken2 integration
- **Functional Annotation**: KEGG, COG, and pathway analysis
- **Clinical Applications**: Gut health, skin microbiome, probiotics, and FMT

## 📊 Core Concepts

### 1. Alpha Diversity (Shannon Index)

```
H' = -Σ(pi × ln(pi))
```

Where:
- `H'` = Shannon diversity index
- `pi` = Proportion of species i in the community
- Higher values indicate greater diversity

### 2. Beta Diversity (Bray-Curtis Dissimilarity)

```
BC = 1 - (2 × Cij / (Si + Sj))
```

Where:
- `BC` = Bray-Curtis dissimilarity (0-1)
- `Cij` = Sum of minimum abundances
- `Si, Sj` = Total abundances in samples i and j

### 3. Relative Abundance

```
RA = (Ni / N_total) × 100%
```

Where:
- `RA` = Relative abundance of species
- `Ni` = Number of reads for species i
- `N_total` = Total number of reads

## 🔧 Components

### TypeScript SDK

```typescript
import {
  analyzeMicrobiome,
  calculateDiversity,
  classifyTaxa,
  generateReport
} from '@wia/bio-013';

// Analyze microbiome sample
const sample = {
  sampleId: 'SAMPLE001',
  sequenceData: reads,
  method: '16S',
  region: 'V3-V4'
};

const analysis = await analyzeMicrobiome(sample);

// Calculate diversity metrics
const diversity = calculateDiversity({
  abundanceTable: analysis.taxa,
  metric: 'shannon'
});

console.log('Shannon Index:', diversity.shannon);
console.log('Simpson Index:', diversity.simpson);
console.log('Observed Species:', diversity.observed);
```

### CLI Tool

```bash
# Analyze 16S rRNA sequencing data
wia-bio-013 analyze --input sample.fastq --method 16S --region V3-V4

# Calculate diversity metrics
wia-bio-013 diversity --abundance taxa.tsv --metric shannon

# Taxonomic classification
wia-bio-013 classify --sequences reads.fasta --database silva

# Generate clinical report
wia-bio-013 report --sample SAMPLE001 --format pdf
```

## 📚 Documentation

| Document | Description |
|----------|-------------|
| [WIA-BIO-013-v1.0.md](./spec/WIA-BIO-013-v1.0.md) | Complete specification with protocols |
| [TypeScript SDK](./api/typescript/) | Full TypeScript implementation |
| [CLI Tool](./cli/wia-bio-013.sh) | Command-line interface |

## 🚀 Quick Start

### Installation

```bash
# Clone repository
git clone https://github.com/WIA-Official/wia-standards.git
cd wia-standards/standards/microbiome

# Run installation script
./install.sh

# Verify installation
wia-bio-013 --version
```

### TypeScript Usage

```bash
# Install via npm
npm install @wia/bio-013

# Or yarn
yarn add @wia/bio-013
```

```typescript
import { MicrobiomeSDK } from '@wia/bio-013';

const sdk = new MicrobiomeSDK();

// Analyze microbiome sample
const result = await sdk.analyzeSample({
  sampleId: 'GUT001',
  reads: sequenceReads,
  method: '16S',
  region: 'V4'
});

console.log('Total reads:', result.totalReads);
console.log('Unique taxa:', result.uniqueTaxa);
console.log('Shannon diversity:', result.diversity.shannon);
console.log('Top 10 taxa:', result.topTaxa.slice(0, 10));
```

## 🔬 Sequencing Methods

| Method | Target | Resolution | Use Case |
|--------|--------|------------|----------|
| 16S rRNA | Bacterial 16S gene | Genus level | Community profiling |
| ITS | Fungal ITS region | Species level | Mycobiome analysis |
| Shotgun | Whole genome | Strain level | Functional analysis |
| Metatranscriptomics | Active genes | Functional | Gene expression |

## 📈 Diversity Metrics

| Metric | Type | Range | Interpretation |
|--------|------|-------|----------------|
| Shannon (H') | Alpha | 0-∞ | Higher = more diverse |
| Simpson (D) | Alpha | 0-1 | Higher = more diverse |
| Observed Species | Alpha | 0-∞ | Number of unique taxa |
| Bray-Curtis | Beta | 0-1 | 0 = identical, 1 = different |
| UniFrac | Beta | 0-1 | Phylogenetic distance |

## ⚠️ Quality Control

1. **Read Quality**: Minimum Q30 score > 90%
2. **Contamination**: Remove host DNA and environmental contaminants
3. **Depth**: Minimum 10,000 reads per sample
4. **Negative Controls**: Include extraction and PCR blanks
5. **Normalization**: Rarefy or use compositional methods

## 🌐 WIA Integration

This standard integrates with:
- **WIA-INTENT**: Intent-based microbiome queries
- **WIA-OMNI-API**: Universal microbiome data API
- **WIA-SOCIAL**: Share microbiome insights and research
- **WIA-BIO-001**: General biotechnology standards

## 📖 Use Cases

1. **Gut Health Assessment**: Dysbiosis detection and microbiome optimization
2. **Skin Microbiome**: Dermatological conditions and cosmetics testing
3. **Probiotic Development**: Strain selection and efficacy validation
4. **Fecal Microbiota Transplant (FMT)**: Donor screening and monitoring
5. **Environmental Monitoring**: Soil, water, and air microbiome analysis
6. **Food Safety**: Contamination detection and fermentation monitoring

## 🤝 Contributing

Contributions welcome! Please see our [Contributing Guide](https://github.com/WIA-Official/wia-standards/CONTRIBUTING.md).

## 📄 License

MIT License - see [LICENSE](https://github.com/WIA-Official/wia-standards/LICENSE)

## 🔗 Links

- **Website**: [wiastandards.com](https://wiastandards.com)
- **GitHub**: [github.com/WIA-Official/wia-standards](https://github.com/WIA-Official/wia-standards)
- **Documentation**: [docs.wiastandards.com](https://docs.wiastandards.com)
- **Certification**: [cert.wiastandards.com](https://cert.wiastandards.com)

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**홍익인간 (弘益人間) · Benefit All Humanity**

*WIA - World Certification Industry Association*
*© 2025 SmileStory Inc. / WIA*
*MIT License*

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**홍익인간 (弘益人間) - Benefit All Humanity** 🌍