I have received government letter re shielding for 12 weeks. I finished my chemo treatment 19.2.20 and radiotherapy on 9.4.20. My question is how long will it take for my immune system to repair and for me not to be classed as vulnerable/severe risk needing to shield? My works want to know when I can return to work, I would be at risk if I returned to work now as I work front line face to face with the general public. When would I be safe to return to work given when my treatment ended in relation  to coronavirus? In the news they say everyone will still be at risk from this virus for many many months to come or possibly 1 year what does this mean for someone in my position, can anyone give me any advice/clarity? Thanks