On the one hand, there is now clear evidence that even those who have no symptoms or have minimal ailments can still transmit the virus. On the other, laboratory studies showing that the virus does not pass only with saliva droplets, but also through aerosols. And this is not just a mere speculation of physics, since in the aerosol the permanence of Sars2-COv-19 can be up to three hours, albeit in small quantities, as shown by a study published in the New England Journal of Medicine.

 

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