[Indices of cellular immunity in patients with influenza A1]

The content of T-lymphocytes was determined by the method of spontaneous rosette formation according to Bach et al. and of B-lympocytes by the method of complementary rosette formation according to Mendes et al. in patients with uncomplicated and complicated influenza A1. In the acute period the values of T-lymphocytes were low and of B-lymphocytes and "O" cells high. During the convalescent period the amount of T-lymphocytes became normal in most patients. In patients with concurrent chronic diseases and in elderly patients the amount of T-lymphocytes remained low for a longer period and did not become normal in most of them during convalescence. The amount of B-lymphocytes at the time of recovery remained high, but in patients with complicated forms of the diseases the values were higher.