From towards the end: "The big reason not to hit the panic button is that we've yet to determine whether the virus can move from deer back to humans." That sai

From towards the end: "The big reason not to hit the panic button is that we've yet to determine whether the virus can move from deer back to humans." That said, if it can do both human-to-deer and deer-to-deer, and we've seen other cases like mink-to-human, then it seems unlikely that deer-to-human is not going to happen (directly or through some other intermediary species).