After the 1920’s apparently the disease left as mysteriously as it arrived. No new cases were reported.
Research on these new cases has finally led to the understanding of this disease. It is apparently caused by a mutant strain of a very common bacteria, in conjunction with the patient’s own immunesysteme going berserk.
Neurologist Oliver Sacks described the treatment, in the 1970’s, of these forgotten patients in his novel: “Awakenings”. Sacks has been presented with the results of this research and considers them a major breakthrough.