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. 1978;6(1):2-4.
doi: 10.1007/BF01641081.

The prevalence of ay and ad subtypes of the hepatitis B surface antigen in Belgium

R Vranckx, J Cole, M Peetermans

The prevalence of ay and ad subtypes of the hepatitis B surface antigen in Belgium

R Vranckx et al. Infection. 1978.

Abstract

Subtyping in various groups of persons positive for hepatitis B surface antigen gave the following results: Among asymptomatic blood donors (healthy carriers) subtype ad was found in 20, subtype ay in 24. Among symptomatic patients with acute hepatitis B ad was found in 25, ay in 29. Among patients of an institution for the mentally retarded ad was found in 9, ay in 23. Among patients of a Among patients of a geriatric institution ay was found in 9; among medical personnel of the same geriatric institution ay was found in 3 persons. Among symphilis patients ad was found in 6, ay in 29; and in patients of a dialysis centre ay was found in 6. These data show that neither subtype is really dominant in Belgium.

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