Please don't be ridiculous. Only 5 countries out of 47 African countries has reported Ebola cases. Nigeria and Senegal could be declared "Ebola-free" by the World Health Organization in a few days, after clearing the requisite 42-day period.

By your logic we should all be scared if we fly to Texas or Spain as Ebola has spread domestically there.

However, everyone needs to be vigilant and prepared to minimize unnecessary spread of the virus. Making sure people who are infected don't fly is one of them (including the 2nd nurse in the USA).