Proving the zoonotic chain of transmission is not a quick or easy thing to do even in a cooperative geopolitical environment. This is not a field that lends it

Proving the zoonotic chain of transmission is not a quick or easy thing to do even in a cooperative geopolitical environment. This is not a field that lends itself to snappy "smoking guns". It took years to build the evidence for civet-cats and SARS-1 and we still don't know for certain what the wild ebola reservoir is.