Resumen

BELLO, Marité et al. Serological evaluation of active-passive immunization for the prophylaxis of perinatal transmisión of hepatitis B. Vaccimonitor [online]. 2012, vol.21, n.2, pp.24-30. ISSN 1025-028X.

The joint administration of the anti-hepatitis B gammaglobulin and the vaccine is worldwide recommended for the prevention of perinatal transmission to children from HBsAg(+) mothers. As a preventive measure of transmission, passive-active immunization was evaluated after 3 days and at 7 and 18 months of life. Eighty-seven sera from children from HBsAg(+) mothers were studied; these sera were collected 3 days, and 7 and 18 months after birth, for a total amount of 261 samples. Newborns were administered a dose of Cuban Human Anti-hepatitis B Immunoglobulin (Ganmahep B) and a dose of the Cuban recombinant vaccine Heberbiovac-HB® before the first 12 hours after birth. Afterwards, the vaccination scheme at months 1, 2, and 12 was followed. Children were evaluated with HBsAg and anti-HBs markers. At the third day, 8.0% of the children were HBsAg(+); the 92.5% of HBsAg(-) children turned out to be seroprotected. At 7 months of age, 1.1% was HBsAg(+), seroprotection of HBsAg(-) children was 89.5%. At 18 months of age, 3.4% was HBsAg(+), with a 97.6% of protection of HBsAg(-) children. The normoprotective response was predominant at the three periods of time, with statistically significant differences in seroprotection and titers =100 UI/L. Geometric Mean Titer (GMT) values were 72.9 UI/L, 168.66 UI/L and 175.62 UI/L, respectively, with statistical significance among them. It is suggested that the use of Ganmahep B, along with the administration of the Cuban vaccine reduces the risk of HBV perinatal transmission and this is the first study carried out in Cuba to evaluate the prophylactic efficacy within this risk group.

Palabras clave : HBsAg; hepatitis; vaccine; perinatal; prophylaxis.

        · resumen en Español     · texto en Español     · Español ( pdf )