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P1Few public health debates generate as much intensity as the question of mandatory childhood vaccination. Proponents invoke the protection of entire communities; opponents invoke the sanctity of parental choice. Both arguments appeal to values that democratic societies take seriously, and neither deserves to be dismissed.

P2For contagious diseases and vaccines that reduce transmission, an important public-health argument rests on community immunity. When a sufficiently large proportion of a population is immunised against a disease, even those who cannot receive vaccines, newborns, the immunocompromised, those with specific allergies, are shielded by the collective barrier. This logic means that individual vaccination decisions are not, in fact, purely personal: a parent who refuses vaccination for their child imposes a small but real additional risk on the most vulnerable members of the community. The resurgence of measles in regions where vaccination rates have fallen illustrates this consequence with uncomfortable clarity.

P3Those opposed to compulsion draw on principles of bodily autonomy and parental responsibility that liberal democracies have historically protected. Compelling a medical procedure, however safe and beneficial, represents a form of state coercion that sets a troubling precedent. Critics also note that trust in public health authorities tends to erode under compulsion, potentially fuelling the very scepticism it aims to overcome, whereas well-designed education campaigns and improved access have raised coverage significantly in several countries without legal mandates.