Epstein-Barr virus persists in tissue after the acute illness clears and can reactivate when the immune system weakens, leaving tiredness, bowel problems, migraine-like headaches and new food intolerances. Covers the gamma herpes virus ampoule, programmes 978.1, 996.0 and 197.0, the Virus 1 and Virus 2 settings from Dr Hennecke and Maquinay, and the substance complex to avoid combining.