never had mono, never had EB, never had lyme or the other titers. I have always rung up negative. the best I can come up with was in 1990 we were required to have the Hep B vaccine. The first two went well, and no issues. The last one I had a horrible fever, rash, and just felt punky for a year. It was like it just smashed my immune system. I struggled ever since that vaccine. Now, did I have it, and that vaccine just triggered it? well, I will never know. That is the only incident I can point to that makes me scratch my head.