I have just had my first half dose of O (at 53 years old). I had minor infusion reactions, itchy ears, sore throat and swollen skin around the eyes. All good so far. Information about side effects experienced further down the line in treatment seems limited. I have now found your posts ‘new allergies?’ How are you coping with these? Also, saw your post re. innoculations against MenB etc. My MS team are very quiet on this aspect…..