I had my first round of Lemtrada 3 weeks ago, and everyone around me has Covid. Friends, housemates, colleagues. I stayed off work for the last 3 weeks but going back to a hospitality job in 2 days..... Supposedly I have a very low immune system after treatment, yet I seem to be the only non-ill person around! I've been a close contact to so many positive cases and still nothing....Would you just go back to normal....?