Comparison of the effectiveness four years after Homo/Hetero prime-boost with 10 μg HP and 20 μg CHO recombinant hepatitis B vaccine at 1 and 6 months in maternal HBsAg-negative children

Author:

Yin Zhiying,Wen Tingcui,Fu Canya,Li Junji,Fang Quanjun,Gong Xiaoying,You Jialing,Wang Shuangqing,Zheng Canjie

Abstract

IntroductionLimited data were available on the effectivenessfour years after Homo or Hetero prime-boost with 10 μg Hansenulapolymorpha recombinant hepatitis B vaccine (HepB-HP) and 20 μgChinese hamster ovary cell HepB (HepB-CHO).MethodsA crosssectional study was performed in maternalhepatitis B surface antigen (HBsAg)-negative children whoreceived one dose of 10 μg HepB-HP at birth, Homo or Heteroprime-boost with 10 μg HepB-HP and 20 μg HepB-CHO at 1 and 6months. HBsAg and hepatitis B surface antibody (anti-HBs) fouryears after immunization were quantitatively detected by achemiluminescent microparticle immunoassay (CMIA).ResultsA total of 359 children were included; 119 childrenreceived two doses of 10 μg HepB-HP and 120 children receivedtwo doses of 20 μg HepB-CHO, called Homo prime-boost; 120children received Hetero prime-boost with 10 μg HepB-HP and 20μg HepB-CHO. All children were HBsAg negative. The geometricmean concentration (GMC) and overall seropositivity rate (SPR) ofanti-HBs were 59.47 (95%CI: 49.00 – 72.16) mIU/ml and 85.51%(307/359). Nearly 15% of the study subjects had an anti-HBsconcentration < 10 mIU/ml and 5.01% had an anti-HBsconcentration ≤ 2.5 mIU/ml. The GMC of the 20 μg CHO Homoprime-boost group [76.05 (95%CI: 54.97 – 105.19) mIU/ml] washigher than that of the 10 μg HP Homo group [45.86 (95%CI:31.94 – 65.84) mIU/ml] (p = 0.035). The GMCs of the Heteroprime-boost groups (10 μg HP-20 μg CHO and 20 μg CHO-10 μgHP) were 75.86 (95% CI: 48.98 – 107.15) mIU/ml and 43.65(95%CI: 27.54 – 69.18) mIU/ml, respectively (p = 0.041). Aftercontrolling for sex influence, the SPR of the 20 μg CHO Homoprime-boost group was 2.087 times than that of the 10 μg HPHomo group.DiscussionThe HepB booster was not necessary in the generalchildren, Homo/Hetero prime-boost with 20 μg HepB-CHO wouldincrease the anti-HBs concentration four years after immunization,timely testing and improved knowledge about the self-pay vaccinewould be good for controlling hepatitis B.

Publisher

Frontiers Media SA

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