While we have not had any clients reporting emails mentioning Ebola, Symantec is reporting Malware and phishing campaigns reaching customers.  It is only a matter of time until these attacks spread to most mail systems.

Phishing is the attempt to acquire information such as usernames and password by masquerading as a trustworthy entity in an email or popup. Communications purporting to be from popular social web sites, auction sites, banks, online payment processors or IT administrators are commonly used to lure unsuspecting public

Source: Symantec