[The immunological shifts in the blood sera of persons inoculated with influenza vaccines]. / Immunologicheskie sdvigi v syvorotkakh krovi liudei, privitykh protivogrippoznymi vaktsinami.

The dynamics of antihemagglutinin content in blood serum of students inoculated with different types of influenza virus vaccines has been traced out in the process of long-term observation. It is shown that this dynamics depends on the type of used vaccines, method of their introduction and epidemiological situation. It is stated that in the process of annual vaccination the highest titres of antihemagglutinins are observed in twice inoculated patients; after the third vaccination these titres decrease and after four-fold vaccination--they increase again.