A leading immunology expert has given hope that Covid-19 may finally be on its "last throw of the dice".
The Delta variant completely changed how the public lives with Covid-19 given its higher transmissibility compared to previous strains of the disease.
But Professor Luke O'Neill of Trinity College told Today with Claire Byrne this morning that Delta "may be as bad as it gets" with vaccines holding firm against it.
"The vaccine is holding firmly against Delta is the message," he said.
A new study shows protection from the Pfizer vaccination remains at 90% six months after the second dose is administered.
However, Professor O'Neill adopted a more cautious tone when it came to giving booster shots to the wider population.
Professor O'Neill said: "It may change when it gets to nine months out or 12 months, then that might be slightly different."
He added if there's evidence of increased risk in six months time "then you may start giving a booster - it may well become a three-shot vaccine finally".
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