Contagious diffusion is transfer of idea in a place especially from higher power to lower people.
Step-by-step explanation:
Contagious diffusion occurs when number of people or number of places become adopters and this happens near the point of origin only. This is mostly done in the case of a disease only.
Another concept about this is that Contagious diffusion is the process when an idea or a belief is passed on from one person to the other person. This transmission happens at a very rapid rate. This is other than the transfer of a disease.