It's thought that there's probably 25 or 30 million Chinese that died before the plague even reached Europe. But it's going to be in Europe that we have the best records and we know that it wreaked the most havoc. And it's not going to affect all communities. Some communities were kind of left alone from the plague and that's probably because they weren't along different trade routes, they weren't exposed in the same ways, or maybe they had different customs that are going to keep them away from the plague. But you can see from the map that I've been showing you, the plague in a very short period of time, in less than a 10 year period, it's going to do its dirty deed. And it's also important to say that it's going to be cyclical in nature. In the winter, the fleas are going to die.