title: [1:7 ratio in the distribution of adw and ayw subtypes in a population of HBs Ag-positive hepatitis patients in northern Italy].
abstract: The subtypes of HBsAg have been determined in 41 cases of acute type B hepatitis by counterelectrophoresis (CEP) using mono-specific D (anti-d), Y (anti-y), W (anti-w) and R (anti-r) antisera following Dr. Holland's technique.  In 36 cases (87.8 percent) the subtype was ayw and in 5 (12.3 per cent) adw.  Neither r subtypes nor simultaneous presence in the same patient of both d and y subtypes were detected.  The subtype distribution in Itayl is closely related to the observed distribution of d/y subtypes in the Mediterranean countries, except for Spain, showing a pattern similar to that of Central and Northern Europe countries.
mesh_terms: D001789:Blood Group Antigens; D006509:Hepatitis B / Q000453:epidemiology*; D006511:Hepatitis B Antigens / Q000032:analysis; D006801:Humans; D007558:Italy
chemical_list: D001789:Blood Group Antigens; D006511:Hepatitis B Antigens
vernacular_title: Rapporto 1:7 nella distribuzione dei sottotipi adw e ayw in una popolazione di epatiti HBsAg-positive dell'Italia settentrionale