Interview With Prof. David Livermore On Lucy Letby

Professor David Livermore, a medical microbiologist, examines the role of environmental and infectious factors in the deaths on the Countess of Chester neonatal unit. He describes a documented Pseudomonas aeruginosa problem in the hospital's water system during the relevant period, a known risk factor for neonatal deaths, and argues this was never adequately investigated or disclosed to the jury. He also discusses the sewage and nappy pad contamination issues on the unit and criticises the Care Quality Commission's 2016 inspection for failing to identify these hazards. He raises specific concerns about the insulin testing: the samples were processed at the Royal Liverpool laboratory using a protocol that he argues did not meet forensic standards, and the laboratory failed its own quality control checks during the relevant period. He also notes the presence of Stenotrophomonas in Baby I, a pathogen consistent with environmental contamination rather than deliberate harm.