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Sub-specificities of hepatitis Bs antigen

S J Zuberi, T Z Lodi

    JPMA. the Journal of the Pakistan Medical Association
    |January 1, 1978
    PubMed
    Summary

    Hepatitis B virus (HBV) ayw subtype is most prevalent in Pakistan. Other subtypes, adw and ayr, were identified in specific patient cases, indicating limited HBV diversity in the region.

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    Area of Science:

    • Hepatology
    • Virology
    • Epidemiology

    Background:

    • Hepatitis B virus (HBV) infection is a significant global health concern.
    • HBV is classified into distinct serotypes and subtypes, influencing its epidemiology.
    • Understanding HBV subtype distribution is crucial for disease control and vaccine development.

    Purpose of the Study:

    • To conduct a preliminary survey of Hepatitis B surface antigen (HBsAg) subtypes in Pakistan.
    • To identify the predominant HBsAg subtype in the Pakistani population.

    Main Methods:

    • Serological testing was performed on blood samples.
    • Hepatitis B surface antigen (HBsAg) subtyping was conducted.

    Main Results:

    • The ayw subtype of HBsAg was found to be the most common in Pakistan.
    • The adw subtype was detected in a single blood donor.
    • The ayr subtype was identified in a Baluchi female diagnosed with acute viral hepatitis.

    Conclusions:

    • The HBsAg subtype profile in Pakistan is dominated by the ayw subtype.
    • The presence of adw and ayr subtypes, though rare, suggests a broader HBV subtype circulation than previously assumed.

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