News Latest News July 2022 March 2022 February 2022 January 2022 December 2021 November 2021 October 2021 September 2021 August 2021 July 2021 June 2021 May 2021 All News A–Z News: March 2022 Testing sewage has helped track Covid - soon it could reveal much more about the UK's health Publication date: 23 March 2022