Do you mean, (a) any documented likely cases of human-to-human ever, or (b) sustained spread in 2024/2025? The recent scoping review strongly suggests there have been occasional incidents over the years, but I'm unsure if that's what you have in mind for "transmitting human-to-human".

Can I get a rationale as to how this would be something we would know collectively? As opposed to something that would be reported on? Is there an aspect of individual judgement involved that could be "wisdom of the crowd"ed out? Hmm. Just read teh market this is supposed to decide. Explicitly refers to the opinion of manifold. Hmm.