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The topic is very hot in these hours. Could postponing the second dose of mRna vaccines against Covid-19 (Pzifer-Biontech and Moderna) be an appropriate choice or a risk for those who would be called to wait six weeks before completing the vaccination cycle? On the one hand, some scientists and the multinational Pfizer, who recalled how in the registration studies “the vaccine was studied for a second administration after 21 days”.
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