Disturbances of cellular immunity in rheumatic fever.

The alteration of cellular reactivity was investigated in 20 patients with rheumatic fever at the first rheumatic attack or in relapse with confirmed heart damage. The results obtained by studying in parallel ESR, the ASLO titer, IDR to streptococci and the degree of leukocyte migration inhibition proved that the onset of rheumatic attack was preceded by a deep disturbance of the cellular immunity. The migration inhibition values were between 50 and 60% (as compared with 10% in the normal controls) in over 85% of the patients investigated. It is emphasized that the selection of cases of streptococcal angina should be made very carefully and that sometimes it is necessary to use a more specific method for the detection of rheumatic fever in its preclinical stage.