Walking around in the market in Saigon you can see all manner of animals for sale. These ‘wet’ markets are the type of place where diseases, such as Covid-19, start up. Different species of wild animals are brought together in close proximity. The people like their food fresh (I suppose the heat has something to do with that). The animals are kept aline in cages and bowls. You select which ones you want and they are slaughtered on the spot – hence blood is splattered and cross-contamination occurs.