Seroprevalence of HBV Infection Among Normal Population and Healthcare Workers in Baghdad

Thaer Kadhim Fayyadh, Fuying Ma


Objective: In this study we verified the epidemiology of HBV infection among normal population and healthcare workers (HCWs) in Baghdad by analyzing the prevalence of specific viral markers (anti-HBs, anti-HBc and HBsAg). Method: A total of 797 serum specimens (588-normal population, 209-HCWs) were tested using ELISA technique and positive HBsAg specimens were confirmed by VIDAS technique. Results: In normal population group, the HBsAg, anti-HBs and anti-HBc Total were 1.02%, 10.54%, 5.44%, respectively. The HBsAg result was significantly lower (P< 0.05) than previous studies were done in Iraq. Significant correlation (P < 0.05) in prevalence of HBsAg was found between age groups and males had higher positive HBsAg marker than females (P < 0.05). The prevalence of anti-HBs was insignificant (P>0.05) between age groups but significant importance (P < 0.05) was recorded between both sexes. Highly significant (P<0.01) was recorded between ages groups regarding to anti-HBc Total marker but insignificantly (P>0.05) between both sexes were noticed. In HCWs group the HBsAg, anti-HBs, anti-HBc Total were 0.96%, 26.7%, 1.44% respectively and the prevalence of HBsAg was significantly less (P < 0.05) than previous studies. The comparison between normal population and HCWs groups showed significant correlation (P < 0.05) related to HBsAg and highly significant correlation (P<0.01) regarding anti-HBs and anti-HBc Total. The HBsAg and anti-HBs among HCWs was significantly increased (P<0.05) with advancing ages, whereas no such variation was observed between both sexes. The HBsAg was high among those with poor health education but it was with significantly importance (P< 0.05) among different occupational types as well as among vaccinated, incomplete vaccinated and unvaccinated HCWs groups. Additionally, HCWs who had only 1st, only 2nd and those who had 3rd doses showed significant correlation between number of vaccinated individuals and prevalence of anti-HBs.

Keywords: Seroprevalence of HBV, HBsAg, anti-HBs, HCWs, normal population

Abbreviations: anti-HBs, antibody anti-HBs; anti-HBc, antibody anti-HBc; HBsAg, antigen HBs

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