The World Health Organization and Centre for Disease Control and Prevention (CDC) in the United States have recently updated their views on the SARS-CoV-2 transmission can occur through airborne transmission.
The CDC highlighted that exposure to the SARS-CoV-2 virus can occur in three principals ways:
- inhalation of very fine respiratory droplets and aerosol particles,
- deposition of the respiratory droplets and particles on exposed mucus membranes in the mouth, nose, or eyes by direct splashes and sprays, and
- touching mucous membranes with hands that have been soiled either directly by virus-containing respiratory fluids or indirectly by touching surfaces with the virus on them.
Taking the new mode of transmission into consideration, the Ministry of Health Malaysia have came up with a guide to the management of ventilation:
Prof Dr Victor Hoe shared views on “Understanding the Role of Ventilation in Airborne Transmission” at one of the Malaysia Society for Occupational Safety and Health (MSOSH) 50-year celebration OSH programmes. The session was held on 14 June 2021 at 9 pm through the Zoom platform and was also live-stream on Facebook.
Dr Hoe discuss on the mode of transmission of the SARS-CoV-2 virus and the factors to be considered for effective ventilation in the prevention of airborne infection which includes type of ventilation, air flow, air change/hour, HEPA and UVGI systems.