Luca Vignatelli great question The lines between infectious diseases and noncommunicable diseases has blurred. For example cancer, nose tumors in the Tasmanian devil population are communicable.

• Devil facial tumour disease is an aggressive non-viral clonally transmissible cancer which affects Tasmanian devils, a marsupial native to the Australian island of Tasmania. The cancer manifests itself as lumps of soft and ulcerating tissue around the mouth, which may invade surrounding organs and metastasise to other parts of the body.
• so many diseases of civilization have leaky guts or dysbiosis oral and gut that it begs the question if if your microbiota is infested do diabetes, MS, Alzheimer's etc. follow

Just saying

Professor YUKNA