I was actually listening to the Voice of Nigeria at the same time as you, had it tuned on the Twente WebSDR as well as my own radio, was weak but audible from my location in New York, S9 +20 on the WebSDR. Likewise the discordant din that you heard was also audible for me as well.
That Ebola virus sure is something, I'd ought to record a few international broadcasters talking about it just to do so!