Of all the cities in all the world, COVID-19, first appeared in the one city where the local Institute of Virology is the world leader in SARS virus research.
The quote is from Viral by Chan and Ridley, an excellent book and well worth reading. It was well received everywhere, except by the Guardian whose reviewer has his own theory of the origin of the pandemic. (Hint: it might have something to do with climate change.)
Climate Change Linked to Pandemics in Ancient Rome :
(Note that all three Roman era pandemics were associated with cold weather and most likely due crop failures and starvation. )