Phase One
A bat transmits the virus into a wildlife farm
Phase Two
The animals raised on that farm are shipped to a WET market and contaminate the people who touch them or kill them
A WET MARKET is a large collection of open air stalls selling fresh seafood meats fruits and vegetables. Some of those wet markets sell and SLAY the animals on the site which they then sell to customers.
The people go home and spread the virus. The people travel and the virus travels with them.
All of this from the bite of a bat.