Diphtheria toxin has two S-S idisulfide bonds so.
Diphtheria combined and breaking S-S 515-13_894-73_962_1779-79 Hz
maybe together with resonance frequency \(1779.79 \,\,Hz\) that breaks labile disulfide bonds of length \(2.055\,A\), is a combination more effective at breaking the disease.
Have a nice day.