Dear Paul, I see that you have had several replies answering you query about Chemotherapy removing built up immunity. It is a subject I know nothing about. I received Chemotherapy between February 1995-June 1996, initially at 7-10 day intervals. I am a hobbiest beekeeper and during that time I continued to work my colonies, sometimes with help sometimes on my own. I got stung occasionally, but don't remember reacting any more severely than usual. But then my drugs would have been very different to yours. However I credit my recovery from Cancer to two things, medical science and my bees. Not certain what proportion to allocate to each! I found lifting off a crown board and just entering the bees' world, shut out other worries that I might have had at the time. I tired more quickly, so I paced myself. Good luck Paul and I hope that you will continue to enjoy your bees. Claire Chavasse, Co. Waterford, Ireland.