although no cases of the disease were registered in the foci of infection where sick persons evading treatment had low bacterial discharge , still the elevated level of infection among children and adolescents in these foci as compared with the foci where tuberculosis patients did not evade treatment ( 35.0 % and 21.7 % respectively ) indicated that the foci of infection where such aggravating factors as alcohol addiction in the source of infection was present were rightly considered to be epidemiologically most dangerous .
C0009450
infection
C0016397
foci of infection