A Clinical Data Analysis on 2 3 6 Cases of Tsutsugamushi Disease of Autumn and Winter Types in Yimeng Mountain Area

The tsutsugamushi disease were discovered in Yimeng Mountain Area , Shandong Province every year in 1986 - 89. An analysis on the clinical data of 236 cases of the disease was reported. All of them had a fever of 38- 41 degree centigrade; Among them there were 199 cases of skin rash(84. 3%) ,204 cases of lymphadenectasis(86. 4% )and 167 cases of ulcerate or eschar(70. 8% ). 150 cas- es hadall the four symptoms(63.6%).About half of the cases have leucocytosis with thehighest of 19. 8×109/L and the lowest of 2.78×109/L.14patients'blood were positive with the highest titter of IgG 1:20480 in ELISA test,immunofluorescence test was made for 12 patients'blood.of which 11 were positive.Rickettsia tsutsugamushi was isolated from patient's blood,Apodemus agrarians and Lep-tofrombidium scutellare and it was typed of Gillian blood serum type.