The Johnson & Johnson vaccine has two major logistical advantages. For one, Jansen is a single shot vaccine. This means that if approved, in terms of efficiency, it would be a step up from the other vaccine contenders that require follow up doses. This would not only ease the burden on production but also distribution, and would significantly amp up the COVID immunisation process. Another significant advantage Janssen has is that it can be stored at refrigerator temperatures (2°-8°C) rather than in special freezers, for up to 3 months, significantly easing distribution. The vaccine is also said to remain stable for over 2 years in temperatures below -20°C.