A British nurse pleaded not guilty Monday to killing five boys and two girls and killing 10 others.
Lucy Letby, 32, received “constant, inappropriate care” in the neonatal unit at the Countess of Chester Hospital, prosecutor Nick Johnson told a jury at Manchester Crown Court in north-west England, reports The Independent.

He said some of the murders or attempted murders between 2015 and 2016 were with insulin and others with air. He said that he tried to kill the child 3 times.
Johnson told the jury there was “a toxic substance at work” at the hospital, which he said had “significantly increased the number of infant deaths and the number of serious catastrophic falls” since January 2015. Its infant mortality rate is comparable to other busy hospitals.
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Prosecutors accused Lucy Letby, 32, of being a “constant malevolent presence” at the hospital in northwest England in a years-long case that has sparked horror and fascination in the country. She has pleaded not guilty.
Prosecutor Nick Johnson told jurors that Countess of Chester Hospital, where Letby worked, saw a significant rise in deaths and “catastrophic collapses” in its neonatal unit during 2015 and 2016, according to the Associated Press.