Last year, on October 23, 2021, I wrote a letter to the President of the United States Bishops’ Conference, which was also sent to you, in which I expressed – as I have already done publicly – my very strong reservations on various extremely controversial aspects regarding the moral legitimacy of the use of experimental gene serums produced using mRNA technology. In that letter, which was written with the help of eminent scientists and virologists, I highlighted the need to update the Note on the morality of using some anti-Covid-19 vaccines, due to the scientific evidence that had emerged even then and moreover had been declared by the pharmaceutical manufacturers themselves.