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发表于 2011-6-14 10:54
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本帖最后由 菋莱妈 于 2011-6-14 10:55 编辑
说说我为什么要给宝宝打针剂
原因来自wiki:
“...On very rare occasions (about 1 case per 750,000 vaccine recipients) the attenuated virus in OPV reverts into a form that can paralyze. Most industrialized countries have switched to IPV, which cannot revert, either as the sole vaccine against poliomyelitis or in combination with oral polio vaccine.” |
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