1. Healthcare Safety Investigation Branch. Investigation into covid-19 transmission in hospitals. 29 Oct 2020. https://www.hsib.org.uk/investigations-cases/covid-19-transmission-hospitals/final-report/.
2. Academy of Medical Sciences. Preparing for a challenging winter 2020-21. 14 Jul 2020. https://acmedsci.ac.uk/file-download/51353957.
3. Risk of hospital admission with coronavirus disease 2019 in healthcare workers and their households: nationwide linkage cohort study
4. West D. Covid cases caught in hospital more than double in a week. Health Serv J 2020 Oct 9. https://www.hsj.co.uk/acute-care/covid-cases-caught-in-hospital-more-than-double-in-a-week/7028611.article. (Login needed)
5. Coronavirus: NHS staff off work due to testing shortages, say bosses. BBC News 2020 Sep 15. https://www.bbc.co.uk/news/uk-54156889.