Cellular immunity in typhoid fever, Legionnaires' disease, amebiasis: role of transfer factor and Levamisole in typhoid fever.

Typhoid fever is an infectious disease commonly seen in the tropics, with multisystem involvement and a high morbidity and mortality rate. Legionnaires' disease: a newly described acute respiratory infection by unusual aerobic gram-negative micro-organisms namely Legionella pneumophila. Cellular immunity: in vitro and in vivo evaluations of cellular immunity using E-rosette formation (E) and 2.4-Dinitrochlorobenzene (D) reaction were made in typhoid fever, amebiasis and Legionnaires' disease. Results will be presented. Three patients with relapsing typhoid fever were given transfer factor and another group with typhoid fever were given Levamisole with sulfamethoxazole-trimethoprim. Up to 90% of the cases receiving immunopotentiating factors/agents improved faster in both general condition, fever and cellular immunity.