Canada hit 3170 measles cases by early June 2025 across 9 provinces. Ontario logged over 2100 cases and Alberta 996. Five Alberta babies born with congenital measles to unvaccinated mothers. Ontario premature baby died from measles with unvaccinated mother. Vaccination with one dose fell from 90% in 2019 to 83% in 2023. Two-dose coverage dropped from 86% to 76%. Herd immunity requires 95% vaccination. One measles case infects 90% of unvaccinated contacts. Pregnant women and fetuses suffer most from low vaccination. Anti-vax sentiment quadrupled among parents since 2019. 17% of parents strongly oppose child vaccination. Most vaccine skeptics are men aged 35-54. Public support for mandatory school vaccinations rose to 69%. Anti-vax roots trace to 1980s and thalidomide scandal.