CMO urges young people to rethink Christmas plans after spike in cases

The CMO said: "Do not rely on a negative antigen test as a basis for not isolating."

Young people have been urged to make an “exceptional sacrifice” and rethink their Christmas plans following a spike in cases in the cohort.

Chief Medical Officer Dr Tony Holohan said one in four people aged 16 to 34 who received PCR tests last week received a positive result.