When I first got my Zapper 2004, I had a major outbreak. I even stopped using it, because the outbreak was so severe and I got scared. But that was the wrong thing to do. Zapping lowers your immune system, which makes you more prone to outbreaks, but you have to continue to Zap for at least 30 days. After two weeks of general zapping, I started zapping the herpes virus itself. Zapping with SmartKeys with a frequency of 355khz and 360khz for 6 minutes a day, hopefully I will never get another outbreak.