3 documents found, page 1 of 1
Prevalence of antibodies against hepatitis A virus among the Kuikuro and Kaiabi...
Lafer, Manuel Mindlin; Moraes-Pinto, Maria Isabel de; Weckx, Lily YinA seroprevalence study to detect total antibodies against Hepatitis A Virus was done with 220 samples from 589 Native Indians from Xingu National Park, Brazil, in five Kaiabi and Kuikuro villages, the most populous ethnic groups. Using a commercial immunoassay kit we detected 97.7% positive samples (95% Confidence Interval: 95%-99%). We noticed a precocious seroconversion, before the age of six years, when the ...
Prevalence of IgG varicella zoster virus antibodies in the Kuikuro and Kaiabi i...
Lafer, Manuel Mindlin; Moraes-Pinto, Maria Isabel de; Weckx, Lily YinThe purpose of the study was to estimate the prevalence of IgG antibodies against varicella zoster virus (VZV) in the two most populated indigenous ethnic groups from Xingu Indigenous National Park, in Brazil, prior to the introduction of vaccination against the disease, and to determine the positive and the negative predictive values of a history of varicella infection. In 2001, 589 inhabitants of two Kuikuro ...
Desenvolvimento de ELISA indireto simples e de baixo custo para detecção de ant...
Ono, Erika; Lafer, Manuel Mindlin; Weckx, Lily Yin; Granato, Celso; Moraes-Pinto, Maria Isabel deWe have developed a cheaper an simple in house indirect ELISA that uses the live attenuated VZV vaccine as a coating antigen. The alternative ELISA had an agreement of 94% when compared with a commercial VZV ELISA kit. Moreover, our ELISA proved to be more reliable than the kit when assessing true negative samples. By adding a standard serum, we were able to produce results in international units per millilitre...