"Dr. Bozsik estimates that 10% of all people in Europe might carry Borrelia burgdorferi, see his comment in The Lancet 2004; 363:901 (full text after free registration and login); most of these carriers are probably feeling healthy most of their life, i.e. are not feeling chronically ill from their persistent, but luckily for them INACTIVE, latent persistent Borrelia infection!"