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It need not even be the children spreading it! Teacher standing at the front of a classroom, speaking loudly and clearly and spitting all over the entire class:
by Smaug123 6y ago
It need not even be the children spreading it! Teacher standing at the front of a classroom, speaking loudly and clearly and spitting all over the entire class: how do you distinguish between that and "one child spread it to their entire class"?
- dtech 6y agoIn the study they use onset of symptoms to derive who got infected first and spread