For a disease to persist, it has to re-infect the host constantly. Most infection mechanisms use the labile disulfide bonds as hinges to gain leverage and push into the cell through the lipid layer. At the last stage of these infection processes the disulfide bonds break and the pathogen is injected into the cell, infecting it. But, if the disulfide bonds break prematurely, the infection process fails, and the disease dies out.
Breaking S-S Labile Disulfides in Infectious Diseases 1779-79_177-979 Hz
May all infectious diseases be gone.