Hepatitis-associated Antigen, Subtypes D and Y: An Epidemiological and Clinical Evaluation

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Abstract
The distribution of HAA subtypes D and Y was investigated in 466 sera from different population groups and from cases of acute and chronic hepatitis. The D subtype is predominating (94%) in all groups of Danes except for drug addicts in whom type Y occurred in 84%. In Greenlanders, only the D subtype was found on the east coast, whereas the Y subtype occurred on the northwest coast exclusively. On the southwest coast the 2 subtypes occurred in equal proportions. In persons of East-Mediterranean origin only the Y subtype was found.