Some of these testimonials make it sounds easy, as if using a cheap zapper can kill all kinds of parasitic worms in al lparts of the body... In practice this is not the case.
Firstly, some of these people have used others treatments at the same time (herbs, Oxypowder , and probably over the counter drugs) so i don't now how they can claim that the zapper did the killing.
Secondly, we don't know if these people are real or paid marketers...
Thirdly, if the zappers are so efficient to kill parasitic worms in a human body, where are the proofs ? If after all these years, all these sales all around the world, the zappers sellers can only provideo vague obscure testimonials to defend their devices, this may mean that this is an industry which makes money by selling useless gadgets to desperate infected people ?
Else please show us some objective proofs (how hte parasitic worms react when electrified with a similar electric signal in a similar environment than the human body, or maybe use only a zapper on an infected person (and no other treatment at the same time) and show us the dead parasites parts in the blood, in the phlegm, in the feces)