I wonder, given the instances of common diseases that were discovered/strongly suspected recently to have a microbial component (eg. ulcers + heliobacter pylori

I wonder, given the instances of common diseases that were discovered/strongly suspected recently to have a microbial component (eg. ulcers + heliobacter pylori, Guillain–Barré + cytomegalovirus, Alzheimer + HSV, Several cancers in men and women + HPV), what are the odds we'll eventually discover fatty liver disease is a symptom or is triggered by "hepatitis X" or something like that?