It's an odd virus, if I was in contact with somebody who turned out to be positive I would test and isolate, 5 of my children got covid, 4 just had cold symptoms,3 of their partners got it and were the same, but one daughter (34)was so Ill an ambulance was called and she went into hospital, her children never got it, my husband was so ill with it at the same time he was taken to hospital by ambulance, while in there there was a lady in the next bed who had 2 strains at the same time,my husband picked up the second type and came home with it, with all this,one daughter myself and grandson who lives with us never got it, I looked after my husband while he was ill, stayed with my daughter to look after her,before knowing she had it,yet I am considered vunerable, 70,HCM and asthma,