During the pandemic, routine childhood vaccinations in Canada fell behind, leaving many students at risk of preventable diseases. Public health officials are now working to catch up on immunizations, with 32,000 students in Ontario’s Waterloo region alone being notified of potential suspension due to incomplete immunization records. A national survey revealed that 300,000 children missed or delayed routine immunizations. Low vaccine coverage in schools can lead to deadly outbreaks, emphasizing the importance of knowing who is vaccinated. Different provinces have varying vaccination schedules and rules, making it difficult to compare rates and highlighting the need for a national vaccine registry.