Correct, there's not much use in testing for the co-infections as the testing is worse than it is for Lyme. Treatments will show you much more accurately if Ehrlichia is something you need to treat for, or if it's another infection that's causing the symptoms.
Tetracyclines are supposed to be pretty effective for Ehrlichia and Anaplasmosis, which is another reason Doxy is given in the early stages of Lyme - to combat those specific co's as well.
Herb only treatment for Lyme & Bart ended 12/11 - no active symptoms for 2 yrs -Herb only treatment for Babesia ended 12/12www.healingwell.com/community/default.aspx?f=30&m=2977364
Had Lyme, Bart, Babs, RMSF, Ehrlichia, Myco, Anaplasmosis, EBV
New Lyme case 8/2014 - Healed 1/31/15 - unknowingly had Asymptomatic Babs and Asymptomatic Bart, being treated now though (2/2016)