An advisor to the World Health Organisation says the Irish government should not build its Covid-19 strategy around a possible vaccine.
Dr Johann Giesecke, from Sweden, will tell the Dáil's coronavirus committee this morning there may be a long wait for one.
He will also say the vaccine may not be effective on those who need it the most.
Dr Giesecke will also advise the government to allow the virus to spread in a 'controlled' way among people under the age of 60.
But infectious diseases professor Sam McConkey, who will also appear before the committee, says that's not the right approach to take: