Homeboy had no need to cure EBOLA today, Mr Sparke. If homeboy had made contact with the SHIELD labs at his disposal, he would have seen that initial progress has been made eons before catastrophe had broken out. The number of dead would have been drastically reduced and the time it took to produce a viable vaccine would be nowhere near the time it takes for one man working alone.
This is why we have SHIELD, Mr Sparke. We are not an agency that seeks to oversee and destroy and meddle, we are an agency of the brightest minds and strongest abilities who connect ourselves together because we are faster and stronger together than separately. Dr Banner may have a break - he is still alive. I am regrettably unable to give any break whatsoever to the individuals who may have survived but now do not.