I’ve read that the topsoil blown in from Russia has created a layer of topsoil in Ukraine that is 150 feet deep.
Most of the Upper Snake River Valley, where I am at, is blown in soil. We even have sand dunes. Lots of people up there doing stupid things riding around. My brother, who lives close to them, says the ambulances run all summer long.
It is no surprise pathogens can be carried to the Americas from Africa. Wouldn’t it be great (not) if one of the hurricanes brought a different kind of death and destruction to our shores. Maybe it has in the past. Maybe some of the early cultures of the Amazon Basin got wiped out by an African virus. Food for thought.