Why did Nphet recommend moving to Level 5?

Dr Holohan warned that “the measures currently in place are not sufficiently controlling the disease”.
In NPHET's advice to the Government to bring in Level Five restrictions across the country, Chief Medical Officer Tony Holohan warned that otherwise there will be up to 2,300 Covid-19 cases by November 7.
He also warned that there will be up to 43 people being admitted to the hospital every day by that date.