Infections represent an important risk for pediatric transplant recipients. Many infections are preventable through immunization, and ongoing studies are working on increasing the number of available vaccines for these children either before or after transplantation. We examine new immunization schedules (such as pertussis vaccines in teenagers) and newly available vaccines (such as human papillomavirus vaccine), and suggest how to deliver them in pediatric transplant candidates or recipients. We also review less common vaccines (such as encephalitis vaccines), and possible vaccines of the future that could have an important clinical impact in these children, such as CMV or EBV vaccines.