1. Novel coronavirus disease (Covid-19): the first two patients in the UK with person to person transmission;Lillie;J Infect,2020
2. World Health Organization. WHO director-general's opening remarks at the media briefing on COVID-19 - 11 March 2020. 2020. Available at: https://www.who.int/director-general/speeches/detail/who-director-general-s-opening-remarks-at-the-media-briefing-on-covid-19—11-march-2020. Accessed February 7, 2021.
3. BBC. Coronavirus: strict new curbs on life in UK announced by PM. 2020. Available at: https://www.bbc.co.uk/news/uk-52012432. Accessed February 7, 2021.
4. The Health Foundation. NHS Test and Trace: the journey so far. 2020. Available at: https://www.health.org.uk/publications/long-reads/nhs-test-and-trace-the-journey-so-far. Accessed August 24, 2021.
5. Office of National Statistics. Coronavirus (COVID-19) infection survey technical article: waves and lags of COVID-19 in England, June 2021, 2021. Available at: https://www.ons.gov.uk/peoplepopulationandcommunity/healthandsocialcare/conditionsanddiseases/articles/coronaviruscovid19infectionsurveytechnicalarticle/wavesandlagsofcovid19inenglandjune2021. Accessed August 24, 2021.