- He will find two dominant distinct diseases in roughly 60% of patients: One disease will have an share of about 40% of patients, while the other will be about 20%.
The two dominant diseases he will find will be either: in the form of an "new" autoimmune disease (as of now undocumented autoimmune-antibody/antigen and target tissue), or an undocumented presentation of a known virus (e.g. one of the HHVs or Enteroviruses), or an combination thereof.
An unknown virus is possible, but seems to me unlikely.
- About 25% of patients will be comprised of patients with on of about 10 diseases. Diseases will be e.g. atypical presentations of known common diseases, and possibly some novel diseases.
- The remaining 15% of patients will have a multitude of diseases, some common and some rare, some known and some currently unknown.
Let's see – I'm not taking bets.