About the zoonotic transfer...
As a PP said - zoonotic transfer is actually how we get most viruses.
All of the following viruses have jumped to humans from various animals:
- Influenza (flu), all types including the common seasonal flu, swine flu, avian/bird flu
- Marburg virus (closely linked to Ebola and 90% mortality rate)
- Nipah virus (South East Asia)
And others too...including some weird and wonderful viruses from parrots kept as pets.
It's a very well known phenomenon in the scientific community and there is nothing unusual about it.
The 'next big one' in terms of viruses is always going to be something that jumps to humans from animals/birds that we have no immunity to. Once this pandemic is over it will be back to a case of waiting for the next one which could theoretically happen at any point in time. In fact we are to expect new zoonotic viruses on an increasing regular basis since we keep encroaching more and more into areas with wildlife and come into closer contact and/or bring domestic animals including farm animals into closer contact with wildlife they would not naturally have ever met (they then become a bridge from the wildlife to us).
We won't hear anything more about the reservoir species of the virus for some time as the research needed takes a long time involving trapping and testing thousands of animals near the source of the outbreak.
If anyone is interested in knowing more about zoonotic viruses I really can't recommend the book 'Spillover' enough.