The SARS-CoV-2 transmission riddle - Part 14 close contact
Of transmission and censorship
This was probably the most challenging riddle to write so far. The reason is simple: everyone knows what close contact means, but there are no universal definitions.
Is it a mode of transmission, or is closeness a variable? Does it involve touching someone, or can it include airborne particles emitted from a short distance? If so, what distance: 1, 2, 3 …
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