How does SARS-CoV-2 spread?

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By airborne droplet infection:  transmission radius is approx. 1,8m, the virus can be detected up to 3 hours as an aerosol.

By direct contact: e.i. via hands, the virus also survives on surfaces. It is unclear how long it survives on surfaces. We know that other types of the coronavirus (SARS + MERES) can survive up to 9 days. Studies that have published in the new England Journal of Medicine on March 17 conclude that the virus survives on copper for up to 4 day, on cardboard up to 24 hours and on plastic and stainless steel up to 72 hours.

Direct transmission via the hands is an important mode of transmission