On 04 February 2021, Professor Weeramanthri provided interim advice, which included advice on ventilation systems.
The advice recommended that the Western Australian (WA) Government instigate an immediate independent expert review of airflow and ventilation in all WA quarantine hotels, to inform any risk mitigation strategy for airborne transmission from infected guests to quarantine workers and determine appropriate ventilation standards (Recommendation 1), and consider ventilation adequacy when requisitioning quarantine hotels (Recommendation 3).
