Temporal dynamics and acquisition of Shiga toxin subtype stx2a within Shiga toxin-producing Escherichia coli in England, 2016 to 2024
An analysis of 12,888 STEC genomes in England from 2016 to 2024 reveals a significant temporal shift toward non-O157 serogroups, particularly O26:H11 and O145:H28, driven by the widespread and increasing prevalence of the high-risk stx2a toxin subtype, underscoring the critical value of genomic surveillance for monitoring emerging public health threats.