Glynn warns that St Patrick's Day must be 'a quiet one' as virus surges again across Europe

Deputy chief medical officer, Ronan Glynn, said vaccines alone will not stop another wave of Covid-19, and people should continue to curb all social contact. Picture: Sasko Lazarov/RollingNews

The Government's senior health advisers have warned of a fourth wave of Covid-19, as it was revealed that 'very particular' clustering of blood clots led to the suspension of the AstraZeneca vaccine.

Deputy chief medical officer Ronan Glynn said there is an "understandable focus" on vaccine rollout, but stressed that the virus is already surging in other European countries.