Suff wrote:How many other coronaviruses have originated outside China?
Lots.
CDC: Coronavirus - Coronaviruses are common throughout the world. They can infect people and animals. Five different coronaviruses can infect people.
WHO: Corona viruses are circulating in animals and some of these coronaviruses have the capability of transmitting between animals and humans. We call that a spillover event.
Wiki: The most recent common ancestor (MRCA) of all coronaviruses has been placed at around 8000 BCE.[26] The MRCAs of the Alphacoronavirus line has been placed at about 2400 BCE, the Betacoronavirus line at 3300 BCE, the Gammacoronavirus line at 2800 BCE, and the Deltacoronavirus line at about 3000 BCE.
All ever so modern and Chinese, eh?
Of course we can call out the Chinese for their population density, and we might turn our noses up at some of the things they eat, but we cannot blame them for creating the virus, which is what is happening.
The simple fact is that we do not know the vector the virus used to jump to humans. They can spread through:
touch
exchanges of saliva, coughing, or sneezing
sexual contact
contaminated food or water
insects that carry them from one person to another
The two most likely routes for the initial infection are contamination or insect bites but as things stand no positive identification has been made.