The Chief Medical Officer, Tony Holohan, has said that there is no certainty that a vaccine for the Covid-19 virus would be produced.
He said that even if a vaccine was developed, issues would remain, including about how long any immunity would last. Speaking at last night's Department of Health briefing, Mr Holohan, said the world was hopeful that a vaccine for Covid-19 could be produced, but that its production couldn't be regarded as a certainty.
He said that even if a vaccine was produced, it would need to be distributed on a large scale around the world, and that issues would have to be examined including how strong the immunity would be and how long it would last.