The ventilation system and the good quality of air in all types of buildings, such as the workplace, business premises, education institutions, places of worship and residences are among the important strategies to contain the spread of Covid-19.

Therefore, Health director-general Dr Noor Hisham Abdullah advised all parties to refer to and adopt the ventilation system guides suggested by the Health Ministry (MOH), Human Resource Ministry (MHR) and the World Health Organization WHO)...