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Researchers we spoke with believe that there is increasing evidence that the virus can be spread with small particles in the air, and that particles can float further and further than larger particles.
– Overall, I think the evidence is strong for an increased risk of airborne infection in indoor environments, especially in dry environments, which we now have during fall and winter, says Staffan Normark, professor of medical microbiology at Karolinska Institutet.
Staffan Normark follows carefully investigates SARS-CoV-2, and believes that there are now studies indicating that the virus can, under certain circumstances, be suspended in the air for a long time, and that the so-called aerosol infection may become more important during the cold season and dry.
More researchers share that view. The medical journal The Lancet wrote this week that there is growing scientific evidence that infectious droplets can spread more than 2 meters from a sick person, and the US Centers for Disease Control and Prevention (CDC) said this week. They recently updated their guidelines on this.
Above all is poorly ventilated closed room should be careful according to the CDC, something Staffan Normark agrees with.
– How long you stay in an environment where small amounts of virus particles are in the air will influence. And it will also matter how airy the room is – that is, how fast the air turns, he says.
