Abstract:
:In China, no data are available to evaluate the interchangeability between Chinese domestic inactivated hepatitis A vaccines (Healive) and imported inactivated hepatitis A vaccines (Havrix). A double-blind, randomized controlled study was to compare interchangeability and safety of Healive and Havrix among Chinese children. Vaccine was administered to 303 healthy children at 0 and 6 months in one of four vaccine regimens: Healive-Healive; Healive-Havrix; Havrix-Healive or Havrix-Havrix. We collected sera samples at 0 (before vaccination), 6 (before second dose) and 7 months (after second dose), and compared groups in terms of proportion of sero-conversions which is defined as ≥ 20 mIU/ml, and geometric mean concentrations (GMCs) of anti-hepatitis A virus (HAV) antibody. Seroconversion rates were 133/133 (100%) for those received one dose of Healive and 105/131 (80.2%) for those received one dose of Havrix at 6 months, respectively (P<0.001), GMCs for Healive and Havrix were 126.1 and 40.9 mIU/ml (P<0.001), respectively. At 7 months, the seroconversion rate was 100% among all groups. The GMC after two doses of Healive was 8905.5 mIU/ml compared with 1900.9 mIU/ml after two doses of Havrix (P<0.001). The GMC in the Healive-Havrix group was 3275.8 mIU/ml compared with 4165.8 mIU/ml in the Havrix-Healive group (P=0.058). There is not different of reported adverse reactions across the groups. The present study indicated that both vaccines can be recommended for interchangeable using of immunization among Chinese healthy children.
journal_name
Vaccinejournal_title
Vaccineauthors
Zhang ZL,Zhu XJ,Wang X,Liang M,Sun J,Liu Y,Gao ZG,Wu JY,Dong XJ,Liu RK,Chen JT,Zhang YQ,Wang W,Zhang LP,Yin Wdoi
10.1016/j.vaccine.2012.04.038subject
Has Abstractpub_date
2012-06-08 00:00:00pages
4028-33issue
27eissn
0264-410Xissn
1873-2518pii
S0264-410X(12)00569-5journal_volume
30pub_type
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