immunizing

Children have been routinely immunized against polio since 1958.

自从1958 年以来，儿童都按照常规接种防治小儿麻痹症的苗。

Parents are advised to have their children immunized against diphtheria.

建议家长让孩子接种抗苗。

Its safety and efficacy were tested and used to immunize the lactational and gestational bovines.

分别免期和妊娠，集免。

Vaccination immunizes people against smallpox.

种痘能使人免患天花。