See this online text:
- Moral Reflections on Vaccines Prepared from Cells Derived from Aborted Human Foetuses, by the Pontifical Academy for Life. With a letter dated 9 June 2005 transmitting the English translation to the Executive Director of Children of God for Life. Available in pdf format (on this page) at Children of God for Life; and may be read online (on this page) at Catholic Culture.org. A version without the transmittal letter may be read online at Immunization Action Coalition.
- A Statement of the Catholic Medical Association responding to the document, “Vaccines Prepared from Cells Derived from Aborted Human Fetuses”, is available at Children of God for Life.
- A brief summary of the document, “Vatican Issues Guidelines on Use of Abortion-Derived Vaccines” (21 August 2005) may be read at National Catholic Register.
- An even shorter summary, “Vaccines prepared from cells derived from aborted human fetuses”, may be read at the Catholic Archdiocese of Melbourne.
- The 2005 document is appropriately read together with the Instruction “Dignitatis Personae” on Certain Bioethical Questions, by the Congregation for the Doctrine of the Faith (8 September 2008), which may be read online (here) with a synthesis on this page at Catholic Culture.org, and is available in pdf format (here) at Children of God for Life. [N.B., Dignitas Personae‘s relevance to the issue is explained in the article “Holy See Document, Dignitatis Personae, Sets Bioethics Standards for Research and Aborted Fetal Vaccines” at Children of God for Life.]
- The foundational ethical principles are authoritatively discussed in the Encyclical Letter “Veritatis Splendor” by Pope St. John Paul II (6 August 1993), Nos. 79-83, which may be read online at the Holy See; and summarised for general readers by Fr. John Yockey in “Does the end justify the means?” at Catholic Herald.
“[I]t is never lawful, even for the gravest reasons, to do evil that good may come of it (cf. Rom 3:8) — in other words, to intend directly something which of its very nature contradicts the moral order, and which must therefore be judged unworthy of man, even though the intention is to protect or promote the welfare of an individual, of a family or of society in general” (Pope Paul VI, Humanae Vitae, No. 14, as quoted by Pope St. John Paul II, Veritatis Splendor, No. 80)