http://en.wikipedia.org/wiki/Bordetella_pertussis http://en.wikipedia.org/wiki/Pertussis_toxin I was wondering if someone knowledgeable could help me. This was the cause of my initial onset of ME/CFS, & I was wondering if it has the ability to remain in the body like EBV & HH6? From what I can gather it is considered an infection not a virus so it would be different. I was just wondering as I think I have it again, I can't get to the doctor at the moment due to health (lol) so I'm only speculating. I get Bronchitis alot & was just improving when the symptoms changed.