It is scheduled to last 6 months. It is going to be traumatic and truly ghastly.
A "poisoner was at work" at a hospital where there was a "significant rise" in the number of healthy babies dying, a court has heard.
Lucy Letby has been accused of murdering five baby boys and two girls, and attempting to murder 10 other babies at Countess of Chester hospital.
Nick Johnson KC, prosecuting, said she was a "constant malevolent presence" in the hospital's neonatal unit.
Ms Letby, 32, of Hereford, denies 22 charges at Manchester Crown Court.
Jurors heard Ms Letby is alleged to have tried to kill one child three times, while another died as a result of being injected with air.