[Clinical features and cellular immunity in patients with icterohemorrhagic leptospirosis].

Time course of cellular immunity parameters was followed up in 56 patients with different forms of icterohemorrhagic leptospirosis of various severity. A grave course of the disease was associated with development of secondary structural immunodeficiency manifesting by reduction of E = RFC count, of immunoregulatory index, and of the count of T lymphocytes. The course of convalescence was found related to the immune response: if immunodeficiency persisted during the early convalescence period, the patients developed late complications.