The Tánaiste says the impact of the Covid-19 vaccine won't be felt until at least April.

Leo Varadkar told his parliamentary party last night there's a good chance the first jabs will happen before the end of this year.

The green light for the Pfizer vaccine could be given by the European Medicines Agency as early as next week.

But Dr Lara Dungan, a leading immunologist, believes there will be no St Patrick's Day parade next March.