Evaluation of the Level Residual H5n1 Antibody Results and Epidemiological Characteristics Involved on the Volunteer Group in Nha Trang

Abstract

We conducted descriptive longitudinal follow-up and uncontrolled studiesperformed on 185 subjects who received 2 doses of 15µg IVACFLU-A / H5N1vaccine 21 days apart to determine persistent of antibody-H5N1 and someEpidemiological characteristics involved, the results showed that: 18 monthsafter IVACFLU-A/H5N1 vaccination, the rate of antibody protection (titre ≥1/40)still reached 61.6%; GMTs of the injection group reached 49.2. No staticallydifferences on age, gender and epidemiological characteristics related persistent ofanti-H5N1 antibody after vaccination. The research is still ongoing until 36months after vaccination.