Abstract
The treatment factors that have lowered the mortality [of diptheria, Haemophilus influenza and viral diseases] from 70% in 1936 to almost zero in 1966 are: close observation by an experienced physician, cool moist air provided by a humidified oxygen tent, adequate doses of penicillin and safe doses of streptomycin, early tracheostomy after insertion of a bronchoscope, postural drainage and postural irrigation, avoidance of instrumental trauma to the mucosa of the trachea and bronchi, and administration of corticosteroids.