The single dose Johnson and Johnson vaccine James Ward, PA 06 May, 2021 18:03 The Republic's Health Service Executive (HSE) has asked for “flexibility” to allow the use of the Johnson & Johnson vaccine, also known as the Janssen vaccine, for people aged under 50. It follows a recommendation from the National Immunisation Advisory Committee (NIAC) that the Johnson & Johnson and AstraZeneca jabs not be given to people under 50. An updated vaccination rollout plan, based on this advice, is expected to be announced by the Government shortly. However, speaking in the Dail later, Health Minister Stephen Donnelly said he was unable to give an exact date for the updated plan.