Sorry, if it was on bean sprouts it didn’t get there from fertilizer.

The primary host for the original, unmutated /unmodified strain were goats.

It was only known in the some of the remoter areas of Central African Republic and it was no great threat.

To understand the difficulty of it showing up as it did have a look at the Central African Republic: http://en.wikipedia.org/wiki/Central_African_Republic

It is not a hub of world trade and goat dung is not a going trade item. Nor are Africian Cattle, a secondary host.

Its largest European trading partners are France from whom it exports 13.6% of trade, and Belgium from whom it imports 9.8% of its goods.

It is not a food exporter. Though food stuffs are the staple of the economy, it is locally consumed.

It is not a tourist destination.

While you may explain away an exotic contagion from travelers, it is a very different matter when it shows up in fresh salads in a country that has no links to the contaminant.

This is not so easily explained. Rather, the explanation is more for the simple.

It needs a much better explanation than what we are getting.