User blog comment:EiplecOco/Bubonic plus Pneumonic/@comment-32656-20140331152221/@comment-4621372-20140404221558

I said more deadly, not worse.

Also, influenza pandemics that get bad have the same problem as Ebola and other infective but ridiculously deadly pandemics, with the added addendage that the body generally reacts faster to non-retrovirii than the more volatile retrovirii, which evolve much faster. Spanish Flu was deadly, yes, but lasted for a half a year. The immunization problem is a double edged sword- yes, bacteria do become immune to anti-biotics, but humans become immune to bacteria and virii the more common they are.

Is it virii or viruses?