Catholic News Agency - Development of an effective, safe and widely available vaccine for the novel coronavirus is deeply important, but its development should avoid unethical links to abortion, said pro-life leaders in a letter to the Trump administration… “It is critically important that Americans have access to a vaccine that is produced ethically: no American should be forced to choose between being vaccinated against this potentially deadly virus and violating his or her conscience,” said the April 17 letter to Dr. Stephen M. Hahn, commissioner of the USFDA.