Lady Justice Thirlwall had been asked to temporarily halt her inquiry by lawyers for Letby and the senior managers at the Countess of Chester Hospital, where she murdered her victims.
Detectives have upgraded their investigation from a corporate manslaughter inquiry against the Countess of Chester Hospital to include those employed during Letby's killing spree.
The evidence from Dr Astha Soni, a paediatrician at the neonatal unit at the Countess of Chester Hospital where Letby worked, disputed claims by prosecution experts.
Letby, 35, was given 15 life sentences after being found guilty of the murder of seven babies and attempting to murder another eight whilst she worked at the Countess of Chester Hospital.
Panel chairman Dr Shoo Lee said in London today that his team of experts had detected a series of medical issues at the Countess of Chester Hospital after examining the Lucy Letby case.
Panel chairman Dr Shoo Lee said in London today that his team of experts had detected a series of medical issues at the Countess of Chester Hospital after examining the Lucy Letby case.
The former neo-natal nurse was convicted of murdering seven babies at the Countess of Chester Hospital during a 13-month killing spree, between June 2015 and June 2016.
Consultant paediatricians on the neonatal unit at the Countess of Chester Hospital flagged up their increasing worries over Letby in late June 2016 following the deaths of two triplet boys.