> only actually serious one on that list is Covid

That's the only one on the list that turned into a pandemic emergency.

> they declared an international emergency, not a global one

...you're mincing words in a silly way.

> there is no chance this spreads outside of sub-saharan Africa

Not what the public-health experts are saying! We currently don't actually know where it's gone. Given multi-week incubation periods, we won't know for a couple weeks where it is right now.

Keep in mind that eastern DRC and South Sudan are host to multiple internationalised conflicts right now. There are easy ways this could spread to the Gulf, Russia, America or Asia through troops and trade.