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- W18173856 abstract "Objective To study the immunological effectiveness of inactivated poliomyelitis vaccine (IPV) for children's primary vaccination in China and to compare with the oral poliomyelitis vaccine (OPV) used in routine vaccination. Methods The 2-mouth-old children were ran domly immunized with IPV and OPV,with 208 subjects in each group. The pre-and post-vaccination blood samples were collected. Micro-neutralization method was used to measure the antibody response against 3 types of polioviruses. X2 test was used to evaluate the statistical difference of protection rates between two groups, while the antibody titers were transformed by logarithm and analyzed by Z-test. P <0.05 was always used to define the significance of analysis. Results After 3 doses of immunization, the protection rates in IPV group reached to 100.0% (186/186) ,97.3% (181/186), 98.9% (184/186) for poliovirus type 1,2,3, respectively, and in OPV group were 97.4% (188/193), 100. 0% ( 193/193 ) ,95. 3% ( 184/193 ), respectively. The geometry mean titers(GMTs) were 151.2,86.7,211.3 for IPV group; and 1089.5,538.2,203.7 for OPV group. IPV showed comparable protection rates with OPV for type 1 and 2 (X2Ⅰ=2.991, P=0.084;X2Ⅱ= 3.512,P= 0.061) ,while type 3 was higher than OPV(X2Ⅲ=4.143 ,P=0.042). The GMT of type 1 and 2 in IPV group were lower than OPV group(ZⅠ=12.537, P = 0.000 ; ZⅡ=13.415, P=0.000 ), while the GMT of type 3 were comparable in two groups (ZⅢ=0.067, P=0.947). Conclusion IPV showed roughly comparable immunological effectiveness in young children. The protection rates for type 1 and 2 were similar to OPV, while type 3 was higher than in OPV group; In terms of GMT, type 1 and 2 in IPV group were lower than OPV,but type 3 were comparable to OPV group.Key words: Poliovirus vaccine,inactivated; Poliovirus vaccine,oral; Comparative study" @default.
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- W18173856 date "2009-06-01" @default.
- W18173856 modified "2023-09-22" @default.
- W18173856 title "Effectiveness of inactivated poliomyelitis vaccine for primary vaccination" @default.
- W18173856 doi "https://doi.org/10.3760/cma.j.issn.0253-9624.2009.06.012" @default.
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