[A field trial with the liquid multicomponent meningococcal vaccine ABC].

The morbidity rates of generalized forms of meningococcal infection in persons immunized with different doses of liquid meningococcal vaccine ABC were compared. The vaccine was introduced subcutaneously by means of a jet injector. Altogether 3,920 males aged 18 years and older were immunized. 1,966 vaccinees received this vaccine in a dose of 200 micrograms and 1,954 vaccinees, in a dose of 400 micrograms. Meningococcal multicomponent vaccine ABC used in these doses showed moderate reactogenicity and did not prevent the development of generalized forms of meningococcal infection.