A nurse in the U.K. pleaded not guilty Monday to accusations that she murdered five baby boys and two girls, and attempted to murder 10 more children.
Lucy Letby, 32, was a "constant, malevolent presence" in the neonatal unit of the Countess of Chester Hospital, prosecutor Nick Johnson argued before a jury at Manchester Crown Court in northwest England, according to The Independent.
Of the babies Letby allegedly murdered or attempted to murder between 2015 and 2016, the prosecution said she injected some with insulin, while another she injected with air.
She allegedly attempted to kill one baby three times. Johnson told jurors "a poisoner was at work" at the hospital, which he said had been marked by a "significant rise in the number of babies who were dying and in the number of serious catastrophic collapses" after January 2015, before which he said its rates of infant mortality were comparable to other busy hospitals.
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