Immune protection of Hepatitis B vaccine among children living in gondar, Northwest Ethiopia
Ethiop. med. j. (Online)
;
57(3): 139-146, 2019. tab
Article
in English
| AIM
| ID: biblio-1262023
ABSTRACT
Background:
Hepatitis B virus infection is a worldwide health problem and highly endemic in developing countries including Ethiopia. Hepatitis B vaccine is included in the routine Expanded Program on Immunization since 2007 in Ethiopia.Objective:
The aim of this study is to assess the seroprotection level of hepatitis B vaccination among children who have received the vaccine.Methods:
A cross-sectional study was conducted on children attending kindergarten and elementary school in Gondar. A pretested structured questionnaire was used to collect the sociodemographic data. Blood samples were collected and serum separated to measure anti-HBs, anti-HBc, and HBsAg levels. Data were analyzed using SPSS statistical software version 21. Binary logistic regression analysis was done. P-value less than 0.05 was considered as statistically significant.Results:
Out of 431 children screened, 27 were excluded from analysis because they were positive for anti-HBc (27/431, 6.3%) and/or for HBsAg (18/431 or 4.2%). Out of the rest 404 children, 130 (32.2%) had anti-HBs titers >10 mIU/ml (seroprotected), while 274 (68.8%) had anti-HBs titers <10 mIU/ml (non-protected). Among 130 sero-protected children, 99 (76.2%) were hypo-responders (antibody titer 10-100 mIU/ml) and 31 (23.8%) were good responders (antibody titer >100 mIU/ml). In multivariate analysis, children of age 6 and 8 years old were 2.4 times (AOR 2.436, 95% CI 1.049-5.654) (P=0.038) and 3.3 times (AOR 3.397, 95% CI1.306-8.837) (p=0.012) better responders compared to 9 years old children, respectively. Moreover, children whose mothers had no previous history of hepatitis were 2.0 times (AOR 2.009, 95% CI 1.101-3.665) (P= 0.023) better responders compared to their counterparts.Conclusion:
The seroprotection level among vaccinated children in Gondar was surprisingly low. Age and children from mothers with a history of hepatitis B infection were associated with seroprotection. The preliminary findings obtained in this study call for a thorough assessment of the effectiveness of the current hepatitis B vaccination program in this study region
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Index:
AIM (Africa)
Main subject:
Vaccines
/
Child
/
Hepatitis B virus
/
Developing Countries
/
Ethiopia
Type of study:
Observational study
/
Qualitative research
/
Risk factors
Country/Region as subject:
Africa
Language:
English
Journal:
Ethiop. med. j. (Online)
Year:
2019
Type:
Article
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