Key points are not available for this paper at this time.
Dear Editor, Several strategies have been adopted to fight against COVID‐19.1 Among these, vaccination is the main weapon to overcome the pandemic.2 Currently, two viral vector‐based vaccines Ad26.COV2.S (Johnson patients receiving viral vector‐based vaccination or with a history of COVID‐19 infection were excluded.
Megna et al. (Fri,) studied this question.