Report on the results of cultivating bronchial secretion for anaerobic bacteria. It was collected from 1005 not selected patients with various lung diseases by using a special canula allowing to obtain the specimen under sterile conditions. In 228 patients (22.7%) anaerobic germs could be identified predominantly potentially pathogenic being: Fusobacterium nucleare (91), Veillonella (36), Pepto-streptococcus (23). Above all, they could be found in patients with bronchial carcinoma, bronchiectasis, chronic bronchitis and pulmonary abscess. Most of them were sensible to penicillin, chloramphenicol, and tetracycline.
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