There's evidence that ebola is being used by propagandist organisations .
Not half as much as it is being used by idiots to promote racism and news organisations to promote sales.
The medical teams teams are there for two reasons:
1) Western government panic about the disease spreading promoted by idiot news organisations. The governments are pretty well informed and know the risk is tiny, but they have to be seen to be "doing something".
2) Surprise, but doctors believe in treating sick people. Even in this day and age there is still some altruism about which hasn't been bought out by big corporations.