Digital Misinformation and the Crisis of Conscience Formation.

The proliferation of digital media has transformed the conditions under which Catholics form conscience, particularly regarding public health. This article examines vaccine refusal motivated by misinformation as a distinct moral problem in Catholic bioethics. We argue that social media algorithms, political rhetoric, and the cultivation of informal "alternative" authorities create an environment in which the Thomistic duty to pursue truth is systematically obstructed, expanding rather than diminishing moral responsibility. Drawing on the Catechism, Veritatis Splendor, the Congregation for the Doctrine of the Faith's Note on the Morality of Using Some Anti-COVID-19 Vaccines, and the Thomistic account of the intellect ordered toward truth, we evaluate such refusal in light of the Fifth and Eighth Commandments, the principle of solidarity, and the tradition's distinction between vincible and invincible ignorance. We propose a three-category typology of vaccine refusal-principled medical or conscientious objection, mitigated hesitancy, and culpable misinformation-driven denial-to resist sweeping moral judgments while preserving genuine accountability. We conclude with pastoral and clinical recommendations directed at physicians, pastors, families, and Catholic institutions, oriented not toward winning arguments but toward minimizing harm and restoring properly formed conscience.