COVID-19: Ventilation

8 December 2021

Advice from the Ministry of Health includes ways to reduce the risk of COVID-19 through air ventilation, air conditioning and air cleaning.

SARS-CoV-2, the virus that causes COVID-19, spreads in particles that escape from an infected person’s mouth or nose through the air.

The risk of infection can be reduced by:

  • air ventilation (which exchanges old air for fresh air)
  • air cleaning (which removes the virus in the air without changing the air)

In most situations, you should combine these methods with other personal protection methods such as vaccination, physical distancing and masks.