目的了解北京市2005年接种吸附百白破联合疫苗(DPT)后无菌化脓病例增多的原因，保证安全接种。
Objective to understand the cause for the increase of sterile abscess cases upon DPT (whole cell) vaccination in 2005 in Beijing, so as to control the AEFI rate and improve vaccination safety.
将具有免疫原性的抗原蛋白吸附到上述多孔微球中制成冻干制剂可得到多孔微球疫苗。
A freeze-dried preparation can be prepared by absorbing antigen protein of immunogenicity onto the porous microspheres to further obtain the vaccines of the porous microspheres.
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