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Blog: Why indoor spaces are still prime COVID hotspots

For months, the risk of the spread of the coronavirus SARS-CoV-2 in poorly ventilated indoor spaces has been downplayed by the Dutch government. In an interview, the Minister of Health, Welfare and Sport recently stated again that ventilation is of secondary importance in the fight against corona. Reference is often made to the local building regulations, while in there is no attention to the spread of viruses. This attitude is incomprehensible to various experts.

WHO advice is also not sufficient
The WHO issued an advice on 1 March for better ventilation in combination with air cleaning. According to, several international scientists agree: this advice comes much too late and according to some it is not clear and concrete enough. According to these experts, the ‘airborne’ route is the main route of the virus distribution. As long as insufficient attention is paid to this, no action is taken and a large part of the population, such as school children, office workers and residents of institutions, runs an unnecessarily high risk.

Clean indoor air is vital
Much more should therefore be emphasized that good ventilation in combination with air cleaning is necessary. As is already the case in several countries, a subsidy could be given for the purchase of mobile air cleaners. It is important, however, that good advice is given, so that there is no false sense of security. Important factors include the number of people staying in a room, the existing ventilation options, the surface area of ​​the room and the activities that take place there.

Take action for a healthy (work) environment
Would you like to take action and know more about the possibilities for air cleaning in your company or institution? Please contact us through

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