[Respiratory viral infection and the immune reactivity of patients with different forms of bronchitis]

Virological and immunological examinations made in 258 persons with different forms of bronchitis (acute, relapsing, chronic nonobstructive and obstructive) made it possible to establish a correlation between the forms of bronchitis and the intensity of immunosuppression as well as between the variety and duration of respiratory virus infections, which may indicate that viruses are implicated in the pathogenesis of both acute and chronic processes.