👇 picture of the hands of Thomas Edison’s assistant. Later died from Cancer due exposure to the same ‘invisible’ X-Ray radiation
Why are we discussing this in 2020, during #Covid_19 ?
Besides the well-known transmission by coughing and sneezing, the virus can be transmitted even during SPEECH….in fact the louder you speak, more are chances of transmission..
An infection has R0-transmission rate
R0=1 one person infects one other person
R0<1 infection dies out
Modelling suggests: A mask 60% effective and worn by 60% people will reduce R0 to <1.0
SEIR and Agent Based Models showing value of Universal masking