https://www.theverge.com/2020/3/11/21156325/coronavirus-pand...
I suspect The WHO declared this a pandemic, based upon the article, out of concern for what they perceive to be insufficient government activity.
EDIT: I was wrong, here is the chart: https://www.who.int/influenza/resources/documents/pandemic_p...
that is, sustained community outbreaks in multiple WHO regions.
For someone like the WHO, you'll either be criticized for sounding the alarm for no reason or not sounding it fast enough.
My reaction to this push alert today was "wait, they hadn't called it a pandemic yet??"
If anything, African states are going to be hit the hardest. South Africa for example, a country I am in, has the world's highest HIV cases. Pneumonia is a death sentence for HIV patients. Also, our infrastructure to manage a spike in infected arriving at state hospitals is abysmal. Right now, we sit with 7 infected (officially) but these are all index based with vectors from recent visits to Italy. If this changes to non-index based vectors, and this disease spreads to the townships, we are done for. If anything, COVID-19 is likely going to hammer Africa the hardest.
Sedentary lifestyles enabled by modern lifestyles as opposed to a hunter-gatherer lifestyle can contribute to decreased overall health but thats not the issue here since almost nobody is a hunter-gatherer anymore.
When it comes to new viruses, all of us are in the same boat immunity-wise.
To take you at your intent, all humans will be exposed to this virus with more or less the same chances of suffering. I imagine there may be pockets of resistance within certain gene pools, but it's a crap-shoot who and where.
those liking scifi: Asimov explored the idea in one of his novels. "Spacers" vs "Earthers" in the novel "The Caves of Steel"
Why isn't Africa innately resistant to HIV then?
Declaration of official pandemic means world bank pandemic relief fund program gets activated as long as many other clauses in different contracts and agreements. There is an influence on WHO and the people behind it didn't want pandemic to be declared too soon. If it was declared 3-4 weeks earlier there could be many lives saved in countries like Iran, what is happening in Africa is not known at all due to no testing but situation is probably bad.