User blog comment:EiplecOco/Bubonic plus Pneumonic/@comment-32656-20140331152221/@comment-32656-20140401112943

Worse than average. Cities were deathtraps at that point.

Exactly my point about the diseases.

Septicemic, quite frankly, is minor at most. Spreads nearly the same way as Bubonic, just not as deadly to humans. More a rodent thing.