I followed the rules, almost. We had 2 people (DD and Mum who we did shopping for) who were clinically vulnerable, and we were masking way back at the end of January. I use masks anyway (Trigeminal neuralgia, with very cold air being a trigger).
Masks, distancing, good hand hygiene; none of us caught COVID (regular testing). And we had all vaccinations when they became available. We worked from home anyway, and continued to throughout the pandemic.
We did break the rules at Christmas 2020 when my very clinically vulnerable daughter in law & my son, who were in her family’s bubble, had to come to us as one of her family had COVID. Everyone tested first to be safe, and it was better for her mental health to be in our family for Christmas (she had younger siblings and Christmas was always a big celebration at her folks). It was Dec 23rd when her DB tested positive, they had no food for the season, and she was scared and sad and just needed that family love surrounding her. As it was, her brother stayed in his room for 10 days, had his food brought to him, spent every moment gaming, and was completely non symptomatic for the whole quarantine period and said he lived like a king with servants 😂 !
To date, none of my family in our bubble had had COVID. Those family members who didn’t follow guidelines have had multiple bouts, so anecdotally, we could perhaps assume that the guidelines worked for us.
Obviously this is not empirical evidence, and every lockdown was undoubtedly a ballache, but seeing what my medical friends were going through, and the situation in Dad’s care home, it brought into sharp relief how important it was to try to minimise spread.
Ironically, I became very clinically vulnerable (and didn’t know it, my routine blood tests were all but cancelled for 2 years) and I think by practicing good hygiene, masking, vaccination etc, I was unwittingly protecting myself.