The value of the Widal test in the diagnosis of Prolonged Septicemic Salmonellosis

Author:

Lambertucci José Roberto1,Marinho Roberto Pedercini1,Ferreira Maria das Dores1,Neves Jayme1

Affiliation:

1. UFMG

Abstract

Twenty patients with prolonged septicemic salmonellosis (Group 1) and 20 with schistosomiasis mansoni (Group 2) were selected for this study. In both groups, the Widal test was done using antigens of the sample Ty 901 (S. typhi). The test was also applied in 6 group 1 patients with antigens prepared from salmonellae isolated from these patients (autoantigens). Titres over 1:200 were considered significant. Ten group 1 patients (50%) were positive for antigen "H" and 5 (25%) were positive for antigen "O". Three patients with negative "H" and "O" reactions became positive with high titres when using autoantigens. Two other cases maintained the same positive titres and one case showed a fourfold increase in titres when the test was done 'with antigens of the Salmonella isolated. The Widal test was positive in most patients infected with group D Salmonellae. Considering titres above 1:200, all cases were negative in Group 2. The authors conclude that the Widal test has low positivity in prolonged septicemic salmonellosis. The test may be valuable in the diagnosis of this disease when using S. paratyphi "A" and "B" antigens and a mixture of Salmonella antigens taken from other groups.

Publisher

FapUNIFESP (SciELO)

Subject

Infectious Diseases,General Medicine

Reference12 articles.

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Cited by 3 articles. 订阅此论文施引文献 订阅此论文施引文献,注册后可以免费订阅5篇论文的施引文献,订阅后可以查看论文全部施引文献

1. Schistosomiasis and associated infections;Memórias do Instituto Oswaldo Cruz;1998

2. Early diagnosis of typhoid fever by an enzyme immunoassay usingSalmonella typhi outer membrane protein preparations;European Journal of Clinical Microbiology & Infectious Diseases;1993-04

3. Schistosomiasis in childhood;European Journal of Pediatrics;1988-01

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