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Infections indoors: Small air purifiers no substitute for ventilating

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When the temperatures outdoors drop, we start to spend more time indoors. Despite the coronavirus pandemic, however, many people don’t want to stop seeing friends and family. Portable air purifiers seem to be a good solution here. However, they can easily give a false sense of security, warns the a German consumer advice centre. Although the devices can reduce the number of allergens and viruses in the air in a room, they cannot prevent transmission when in close contact with someone (less than 1.5 m). Therefore, they are only one of a number of protective measures designed to reduce aerosols …

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