The argument from ignorance is a common human failure of logic, but rather than be embarrassed by this, religion seems to take great pride in its ability to argue on that basis. It claims it to be a strength. A few years back, I frequently heard religious philosophers announcing with pride, "While science is good at answering the 'How' questions, religion answers the 'Why' questions." I've pondered this at length. What is a 'How' question? I suppose it's a question that addresses mechanical explanations, i.e. "How does the body produce insulin?" And that a 'Why' question addresses matters of spiritual purpose, i.e. "Why did God create insulin to help organisms regulate blood chemistry?"
Aside from the fact that the statement is technically meaningless, the implication is that science cannot explain everything, and that which it cannot explain, religion can. In the end, it seems to say that science is limited by facts, whereas religion is not dependent on facts; Science deals with facts, while religion deals with everything else, including bullshit.
And as for the Ebola virus, there is a cure for it, mankind has found a medical cure for it, but those who follow faith as the only answer for it do not even appreciate what these scientist and analytical thinkers have found.
Perhaps someone pointed this out to the religious authorities that the statement seems chillingly like an attempt to glorify arguments from ignorance. That might explain why the statement is not as popular as it once was.
There is never one singular overarching answer to things, everything has its limits, and we as primates trying to find answers to questions is a pretty amazing thing to look how much we can discover. It is because of those of us who asked the questions, wanting to know those answers, to how mankind discovered medicine, vaccines, technology, flight, understanding of biology and chemistry.
But science is not a perfect art and it doesn't not yield results in a single answer, such as finding the cure for HIV or a simple cure for cancer, but just thinking about things like the common cold would kill people 100 years ago, to now just taking a pill to dull the colds effects until it disappears, such things only occurred then religion was absent from the discovery.
This is why to those of scientific and analytical minds do not just stand on one universal answer, like religion idiots do. A religion man would believe that god will cure him of his disease and save him, but it is the doctor or scientist who casts god off that saves the mans life with his intelligence.
The god complex the end of the road, it is a void that has no further pursuit for answers. It is only because of those brilliant men in the world who sort answers for questions that god could not answer, that we have what we have today. Even talking here now, on this forum, is because of people who put there heart and mind into building the technology to make it happen. This goes for theists to, the things they use to spread their pathetic gospel, it comes from people who do not follow god, and yet they use it anyway.