Ebola booster dose vaccination kicks off in Sierra Leone following administration of the prime dose of the Johnson & Johnson Ebola vaccine in May this year. Frontline health workers, traditional healers and commercial motor bike riders who received the first dose are now being given their second jab to maximise their protection against the disease. The target beneficiaries were identified as high-risk groups and selected for preventive vaccination to protect them in the event there was a cross border transmission of the disease which had re-emerged in Guinea in February 2021.