User blog comment:Fliu/Chapter 949: Victory at Udon/@comment-108.83.222.210-20190719164708/@comment-108.83.222.210-20190719225726

Given Chopper's skills I would not doubt his ability to do that. From what I can tell, most vaccines involve exposing the body to a little bit of the disease or virus in order to allow the body to adapt to them and create antibodies for when they are exposed to the real thing. It should work here too. I expect that now that Luffy has successfully convinced the others to fight with him and they now have a base of operations without Kaido knowing that they will be able to plan what to do next for the conflict ahead. We now have a large number of people ready to storm the gates without Kaido even being aware of it and with the work of the other Strawhats and their allies, things are looking good.