October 24, 2021 "The Johnson and Johnson vaccine has obtained the approval of single-dose administration; in these hours there is news of a review by the FDA and perhaps it will also arrive from Ema, for the administration of a second dose with an mRna vaccine . Even if it is administered over 2 months it does not affect the efficacy ".

This was stated by the coordinator of the Scientific Technical Committee Franco Locatelli to "Che tempo che fa", on Rai3.