.. _arc-latest:

ARC Version 1.2.2
=================

The latest ARC `Version 1.2.2 <https://github.com/ISARICResearch/ARC/releases/tag/v1.2.2>`_ contains a comprehensive library of harmonised questions designed for use in **Case Report Forms (CRFs)** supporting outbreak responses and clinical surveillance across multiple infectious diseases and populations.

The ARC data model supports outbreak responses for

- **COVID-19**
- **Dengue**
- **Chikungunya**
- **Mpox**
- **Influenza H5Nx**
- **Acute Respiratory Infection (ARI)**

and includes enhanced coverage for **pregnant and paediatric populations** through both disease-specific and population-agnostic modules.

CRFs are organised into seven core forms:

- **presentation**
- **daily**
- **medication**
- **pathogen testing**
- **outcome**
- **follow-up**
- **withdrawal**

Each form contains multiple sections covering, as applicable:

- Inclusion and exclusion criteria
- Hospital admission and patient demographics
- Travel and exposure history
- Pregnancy- and infant-related information
- Comorbidities and risk factors
- Past medical history
- Medication and vaccination history
- Vital signs
- Signs and symptoms
- Clinical assessment
- Treatments and interventions
- Laboratory and imaging results
- Pathogen testing
- Complications and outcomes

Together, these questions enable comprehensive data capture from **initial presentation**, through **daily assessment during admission**, to **discharge and follow-up**.