I think the next epidemic will be caused by fungi. I think it is already established but perhaps we are not paying the attention it requires while it remains contained. For example, there is an increase in outbreaks of Candida auris and we already know that it is multiresistant.

With Tomatoflu, Monkeypox infections attacking humans, Bioterrorism, CBRN threat possible reality ......We need to prepare...please find attached article

It's possible to emanate from fungi. But there are many possible sources as well because man is in the milieu of these microbes and unfortunately, doesn't pay much attention