specializedmedicalthe process of protecting a person or animal from an infectious disease by putting a substance into the body that makes it produce antibodies(= proteins in the blood that fight disease)免疫接种
mass/routine immunization大规模/例行接种
Immunization gives people the ability to resist infection temporarily or permanently.免疫接种可让人可以永久或暂时地抵抗感染。
With the use of immunizations in babies, the mortality rate has dropped significantly.开展婴儿免疫接种以来,死亡率显著下降了。