Your child's development is at risk if they are unvaccinated. A vaccine provides safety against preventable diseases. Your child may infect others in the Community, and unvaccinated children may spread vaccine-preventable diseases in schools and communities. Unvaccinated children may infect babies who have also been vaccinated Young animals must be fully vaccinated. Unvaccinated children may infect people of all ages If your child is unable to get vaccinated for medical reasons, this may include: Children and adults with leukemia and other cancers, immune system problems, and people of all ages receive treatments or medications that suppress the immune system. Your child may need to be excluded from school or daycare if they are unvaccinated: Disease outbreaks may involve unvaccinated children, and they may be excluded from school or childcare for their protection, and others. This can be stressful for both children and parents.