Here's the huge diffrence between the two types of electromedicine treatments:
Blood Electrification (BE) has proven to stop all virus and kill all bacteria in the blood.
Clark Zapping (CZ) has been disproven at being able to kill microbes. Dr Robert Thiel did a study using Clark Zappers and his conclusion was that they boost immunity a tad but don't kill anything. (see http://www.dragonfly75.com/eng/thiel.html)
BE emphasizes the amount of electric current at a very low frequency (anything below 100 hertz).
CZ emphasizes a specific frequency with no importance on current level.