Effective and successful vaccination programs during childhood have resulted in a growing number of unimmunized persons reaching adulthood without being exposed to common infectious diseases. Therefore, it is strongly recommended that physicians establish an ongoing immunization program for adults. Before administering a vaccine, physicians must consider a patient's risk of contracting the disease and the safety and efficacy of the vaccine.
儿童时期有效且成功的疫苗接种计划导致越来越多未接种疫苗的人成年后未接触过常见传染病。因此，强烈建议医生为成年人制定持续的免疫接种计划。在接种疫苗之前，医生必须考虑患者感染该疾病的风险以及疫苗的安全性和有效性。
