The WHO is promoting World Immunization Week 2026 with a campaign encouraging families to pass on the tradition of vaccination to the next generation. Vaccines have prevented millions of deaths globally and remain one of public health's most effective interventions — this is well-established across decades of research and global health data. The independent search returned some fringe sources questioning vaccine safety, but these represent a tiny minority position contradicted by overwhelming institutional evidence from WHO, CDC, NIH, and peer-reviewed medical literature.