Currently the mechanism of spread and infection is unknown despite the tedious epidemiological, clinical, and neurological studies that have been conducted. Recent Studies show horizontal disease transmission, or the transmission of a disease from one individual to another of the same generation.
At present, the method of disease dissemination and infection is unclear, despite extensive research in epidemiology, clinical science, and neuroscience. Recent investigations reveal horizontal disease transmission, or the transfer of a disease from one person to another within the same age group.