time. She said: “The guidance we issued at a much earlier stage to care homes was very much based on risk assessments and isolation and infection prevention and control, rightly, and all of these things remain important.“The answer to questions about why guidance has changed along the way is that our knowledge and understanding of this virus has changed and is still changing and we have to be able to adapt our approach in light of that.“What has happened in our care homes ins heartbreaking.