Background: Hepatitis B virus infection has become a global public health problem. In Nigeria, several studies from different parts of the country have confirmed the endemicity of the infection. This study seeks examine the seroprevalence of Hepatitis B viral infection among patients attending Aminu Kano Teaching Hospital in Kano metropolis.Method: This is a retrospective study in which patients tested for hepatitis B virus using hepatitis B surface antigen (HBsAg) as a marker were reviewed over 3 years.

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In this paper, authors have used operation definition of Supportive supervision to studying its role in improving immunization coverage in developing country settings. Comparison of immunization coverage before and after the initiation of supportive supervision is analyzed. Despite of methodological limitations, the study infers that supportive supervision improves immunization coverage and also serves an efficient tool to strengthen the local health system.