Here's something I'd really like to know. Recall we've got other unnamed sources who claim that US intelligence knew about a viral outbreak in the Wuhan area by late November. Suppose this is true. What does it say about the path (or multiple paths) of infection spread? Who was sick in mid-to-late November, and where were they? In the city? In rural areas? Because maybe "patient zero" was in some small village in early November, and that's why Chinese researchers at the lab were scrambling to research the virus by December.
The lab is still a plausible source for the spread to the city, but maybe they were just one focal point for a virus that was already spreading on its own.
Of course, China will never tell us about any of this.
Governor Newsom, California, had our health departments go thru the data and in California there is no difference in cases or cases mortality based on race. The racial composition is in line with the population of California.
That is a fact, now we can speculate, the first step to developing theories.
What might be a difference then in Detroit or Chicago or other big cities ? We are back to lifestyle, diet, obesity, etc... and also potentially Vit D deficiency since we have less of that in CA and it is harder to get enough naturally if dark skinned in Northern areas of the USA. While that is true, I have not seen any link with COVID-19, but just putting that out there as one difference due to the geography/race overlap. Another geographical difference could be pollutants. Not saying CA doesnt have any, but they are likely different. Our hardest hit area, L.A. county has our worst air pollution. SOme of the inland counties have it bad in summer, so we will see.
Also our larger population areas are overall warmer than the large cities in other areas, and in that, not about virus spread but that the people and their homes are not fighting off the cold. It is hard to get better if you are cold and it can be a drain on the immune system, that and lack of sunlight. Wuhan China does not have heat supplied to its apartment blocks, even their quarantine field hospitals they set up, you could see the healthcare workers in down coats. Not saying richer people there may not have heat, but it is not the norm.