[The heterogeneity of formed collectives in susceptibility to meningococcal adhesion].

4 patients with meningococcal infection and 141 meningococcal carriers were examined. The authors study heterogeneity of human population concerning susceptibility or stability of erythrocytes to adhesive influence of meningococci. In 17.4% of cases erythrocytes were highly susceptible to adhesion of meningococci, in 20.4% were stable to this influence, in 62.2% were moderately susceptible. The highest susceptibility of erythrocytes (out of statistics) was marked at the patients of Kirghiz and Tadjik nationalities. These indexes have the same statistic frequency for the persons with different blood groups (system ABO), independently of their rural or urban place of residence. The high susceptibility of erythrocytes (0.25 GAE or less) to adhesion of meningococci is three times more frequent among the persons with meningococcal infection and carriers of meningococcus. This connection may be regarded as a predisposition of the organism for the infection. Thus, the susceptibility of erythrocytes to adhesion of meningococci gives the possibility to determine the persons who need an urgent immunization at the forming collectives.