Determination of Hepatitis B Surface Antibody Titer in Vaccinated Children with Major Thalassemia in Kerman - Iran
Author(s):
Abstract:
Background
Thalassemia patients, comparing to normal population are more susceptibleto hepatitis, because of frequent blood transfusions. Objective
To determine the immune response of children with major ß-thalassemia, by measuring anti-hepatitis B surface antibody (anti-HBs Ab) following the last HBV vaccine injection. Method
This study carried out on 215 thalassemic children who received three standard intramuscular recombinant HBV vaccines. Children age range was between 1- 4.5 with a mean age of 3.37 years. Based on the time lapsed since last vaccine injection, the subjects were divided into three groups; 0-15 months, 15-30 months and 30-45 months, respectively. Based on the serum levels of anti-HBs antibody, subjects were categorized as: good responders (anti-HBs >100 IU/Lit), low responders (anti-HBs 10-100 IU/Lit) and non responders (anti-HBs <10 IU/Lit). Results
The mean range of anti-HBs level in the above mentioned groups were 205.34, 128.8 and 54.25 IU/lit, respectively (P<0.0001). In girls, the mean antibody level was 104.2 and in boys it was 95.8 IU/Lit (P>0.05). Out of 215 selected individuals 75 (35%) were good responders, 65(30%) low responders and 75 (35%) non-responders. Conclusion
Standard HBV vaccination in thalassemic children results in an immune response in more than 65% of the subjects. Therefore, assessment of anti-HBs antibody level, 45 months after the last vaccination is recommended.Language:
English
Published:
Iranian journal of immunology, Volume:3 Issue: 1, winter 2006
Pages:
30 to 34
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