BlueBelle
My mother tested negative twice before leaving hospital after a fall (a week long stay) but the day after she arrived home she felt ill, the carer rang for an ambulance and when she got back to hospital, she then tested positive for Covid. Unfortunately, as we’d been told she was negative and had no need to isolate, my husband called round to do a small job for her, became infected by her, though they were both wearing masks, and he brought the infection home to me. I ended up in hospital for twelve days, very ill with Covid.
So unfortunately the tests aren’t always accurate and so people coming home from hospital should isolate in my opinion. Marydoll was responsible but obviously not everyone is.