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
。
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。
If vaccinal measles vaccine can prevent hives, take a poliomyelitis tervalent mixture vaccine can prevent a poliomyelitis to wait.
如接种麻疹能预防麻疹，服脊髓
质炎三价混合能预防小儿麻痹
。
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