I deal with Lyme every day. You get Lyme or its co-infections through a bite of a TICK, MOSQUITO , flea, bed bug, spiders, mites, raw meat, from cats, from dogs, cows, the list is endless. People come in contact to at least one of these things. THE ONLY reason why some don't have it, the immune system kill it off. EASY 50% of the population have it. Lyme is DEMENTIA, MS, Parkinson, ALS, Sometimes AUTISM, tourettes. We have had ALL of these people..The bacteria may also live inside your cells in an "L-form" or coated as a cyst. The ability to change forms explains why diagnosis and treatment is so challenging and why recurrence of symptoms may result after standard antibiotic protocols. 100% have depression, after treatment its GONE..