[IYAS9YAS]

As awful as it is, I am surprised that MILLIONS in Africa didn’t perish from it, which might mean that it’s been around for eons and a large segment is immune from it.

I think the main reason is remoteness. It killed far faster than people could walk. Things have changed, with transportation you get a bigger spread.

[machogirl]

yes, I agree with that, but in the big cities in which there was the spread in Nigeria and Western Africa, the conditions which exist now (unsanitary in all but the wealthy few), the death toll would have been astronomical due to the conditions in which the masses live. There has to be another factor in this disease. If this ever spread to India, with the lack of sanitary conditions in most of the cities, this would be a disaster. (unless there is another factor, genetic, that hasn’t been ‘discovered’ yet).