Tehran University of Medical Sciences Acta Medica Iranica 0044-6025 0 3-4 1977 12 15 105 110 M. Tabarestani J.H. Hoofnagle A. Afkari 2015 09 28 Hepatitis B surface antigen CHBsAg) was found in 1% of controls, 2.1% of professional blood donors, 2.0% of leprosy patients and 76.1% of acute hepatitis in Tehran and Mashhad, Iran. All HBsAg positive samples also possessed antibody to the hepatitis B core antigen and all were subtype ayw. Type B hepatitis and the HBsAg state aloe frequent in Iran, but most must be accounted for by u nonparenter- al" or "rnapparent'' parenteral exposure. https://acta.tums.ac.ir/index.php/acta/article/view/4212 https://acta.tums.ac.ir/index.php/acta/article/download/4212/4187