Last year I had whooping cough (not diagnosed because I don’t go to the doctor, but it was very violent and didn’t allow me to sleep at night … I was also afraid for the safety of my ribs). The zapper kept the fever and other symptoms low but the cough persisted. This was resolved in 6 minutes when I set the Clark frequency of the “bordetella pertussis” (3 minutes with square wave and 3 with sinus wave). The cough miraculously disappeared and never returned. It was the only time in 20 years that the standard frequencies didn’t work for me.