The European health agencies have said there's ‘no clear evidence’ on second boosters for under 60s.
People aged over 60, and those with an underlying condition, look set to be offered a second Covid-19 booster vaccine.
The European Centre for Disease Prevention and Control (ECDC) and the European Medicines Agency (EMA) are recommending that second booster doses of mRNA Covid-19 vaccines be considered for people between 60 and 79 years old and people with medical conditions putting them at high risk of severe disease.
These could be administered at least four months after the previous one, with a focus on people who have received a previous booster more than 6 months ago.
However, at the moment, there is no clear evidence to support giving a second booster dose to people below 60 years of age who are not at higher risk of severe disease.
There's also no clear evidence to support giving early second boosters to healthcare workers or those working in long-term care homes unless they are at high risk.

Local TD Accepts Data Centres Are A "Particular Issue" In Ireland
Katie Taylor Tickets Sell Out for Croke Park Final Fight In September
New Digital Wallet Might Be Needed To Access Pornography Online
Two Men Arrested As Gardaí Seize Firearm And Drugs In Blanchardstown
Trial Of Man Accused Of Attempted Murder Of Three Children Will Be Shown CCTV Today
Second Night Of Riots In Belfast
Victim Loses Eye After Attempted Murder In Belfast On Monday
Report Finds Over 95,000 Children Are In Poverty