RESUMO
Rubella virus antibodies were measured in 85 sera from pregnant women by using a new latex test, and the results were compared with those obtained by using hemagglutination inhibition. The sensitivity of the latex test was 98.4%, specificity was 66.6% and the predictive value of a positive result was 90%. The latex test is a simple test and has much shorter reaction time than that of the hemagglutination inhibition.
Assuntos
Anticorpos Antivirais/análise , Testes de Inibição da Hemaglutinação , Testes de Fixação do Látex , Complicações Infecciosas na Gravidez/diagnóstico , Vírus da Rubéola/imunologia , Rubéola (Sarampo Alemão)/diagnóstico , Feminino , Humanos , Valor Preditivo dos Testes , GravidezRESUMO
Forty-nine patients with a diagnosis of idiopathic haemolytic uraemic syndrome (HUS) were investigated to determine evidence of infection by verotoxin-producing Escherichia coli (VTEC). Free faecal cytotoxin active on Vero cells (VT) was detected in 15 out of 49 patients (31%). Seroconversion or high titres of VT-neutralizing antibodies were detected in 11 out of 18 patients (61%). The results of the present study suggest an association between HUS and infection by VTEC.