We always hear/talk about the natives during the conquering of the new world as being subject to the diseases from Europe which (many believe) was the primary reason for their fall. There had to have been diseases in america in which the Europeans weren't custom to, right? Why don't we ever hear about them being affected? Did they have better medical means to prevent/cure them?

Sorry if it's the wrong place (I don't think it is) or a poor question, I only explore this sub every now and again. I learn a lot here though, so thanks!