In a double-blind experiment on the efficacy of a medicine for a disease, a research group divided the subjects into two groups: the experimental group and the control group. The severity rate of both groups was about 20%, which was similar to the overall severity rate of the disease in the same period. The experimental results showed that 7 of the 18 cases in the control group died, with a fatality rate of 39%, and 3 of the 34 cases in the experimental group died, with a fatality rate of only 8.8%. 
the research group thinks that the drug has obvious curative effect on this disease.
The composition of the drug has not been fully disclosed.