It says the single dose vaccine can be administered for those aged 18 years and over.
The European Commission says it will move quickly to grant approval for use in the EU.
Health Minister Stephen Donnelly's welcomed the move and says Ireland has an advance purchase agreement for 600,000 doses between April and June.
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Pat Shortt in conversation with Sunshine 106.8's Joe Harrington
Former Taoiseach Bertie Ahern dropped into the Sunshine 106.8 studios to chat with Joe Harrington
