Hi Dean, Beverly.  I have been tested for bacteria and the tests all come up 
negative.  I sort of think that somehow it is related to my sinus infections. 
I have always been allergic to pollens, mold and a bunch of foods like eggs.  
I worked out in my garden last week and found it touched of my allergic 
reaction, probably from a lot of dust.
I tried my Clark type zapper touching my throat and held in one hand.  I am 
not sure that my zapper is doing its job.  I can feel a voltage output when I 
touched the probe to my throat.  I bought a Beck type zapper also and it 
didn't help my sinus problem.  Also a magnetic pulser.  I am thinking of 
trying a different Clark zapper. 
Brickey