[Adsorption of Vi antigen on human erythrocytes].

The accumulation of Vi-antigen in the human body was studied with the use of such characteristic as the specific adsorption capacity of red blood cells. This parameter was shown to depend on the phenotype in the ABO blood group system. In cases of typhoid fever an increase in the adsorption capacity of red blood cells was observed at the acute period of the disease. These changes were particularly manifest in patients belonging to groups O and A. The authors suggest that the adsorption of the antigen on red blood cells has a definite kinetics related to the dynamics of the infectious process.