04/05/2021 at 10:37 PM Posted by Kevin Edward White By Roberto De Mattei, OnePeterFive, March 31, 2021 Editor’s note: Today we are pleased to reprint, with the author’s permission, the following essay from Prof. Roberto de Mattei, an eminent scholar of Church history and one of the most notable thought leaders of European traditional Catholicism. Herein he offers helpful guidance on the matters of both the moral liceity and the questionable efficacy of COVID vaccines — issues facing many Catholics, particularly those most susceptible to Coronavirus or those who are faced with mandatory vaccination to retain employment. The essay below references a book, already published in Italian and soon to be available in English, entitled, “On the Moral Liceity of the Vaccine.” We do not have a link to purchase the book at this time. This essay first appeared at Corrispondenza Romana.