Trying times for anyone involved in care as 'the guidance' isn't really directive and places the onus on CH's who are not well versed in dealing with these kinds of risks, so they make blanket decisions. The reality is that its is now a part of our lives and we have to find ways of managing it so that life goes on as best as possible, which clearly isn't happening in many care homes, my mums CH included. The time will come when Covid-19 becomes accepted as a part of our lives (just as flu is) and we will have moved on to other problems. I seriously think that the way CH's are designed and built is going to have to change if these kinds of pandemics are inevitable, because as many of them are, they are not fit for purpose.
@Palerider glad that you can start to visit your mum again but it should't have taken pressure from you and writing to the MP to get things moving. I don't know if you heard it but there but there was a radio 4 interview by John's Campaign (who are pressing for a judicial review of the visiting guidance) last week, with someone representing care homes too, and the issue of accomodation problems, and the failure to treat care home residents as individuals, was raised. It's worth a listen - the interview starts at 1:18:05: https://www.bbc.co.uk/programmes/m000m4pd