Good point but Ebola is not serious in that regard. South Africa is one of the few African countries that has dealt very well with Ebola despite being affected due to its geographic location.
They will be fine as long as TM staff/players don't share bodily fluids and interact with infected animals which I doubt they will face in the city, training fields, and hotels. :D :D
Ebola's outbreak recently has been serious due to education on this matter and inability to properly detect/deal with it such as in airports.