> This is very important to understand that, in order to reduce sufficiently the transmission, the population needs to acquire herd immunity as a result of natural infection OR... and this is worst case scenario... as I was correctly introduced, I'm coming from a veterinary field, so I know what is happening in populations where this herd immunity cannot be acquired - nature will make sure that the part of the population, that can not contribute to this diminished transmission, to this sterilizing immunity... disappears.

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