SciELO - Scientific Electronic Library Online

 
vol.47 issue3A Triatoma maculata (Hemiptera, Reduviidae, Triatominae) population from Roraima, Amazon region, Brazil, has some bionomic characteristics of a potential Chagas disease vectorMycophenolate mofetil may protect against Pneumocystis carinii pneumonia in renal transplanted patients author indexsubject indexarticles search
Home Pagealphabetic serial listing  

Revista do Instituto de Medicina Tropical de São Paulo

Print version ISSN 0036-4665

Abstract

LAFER, Manuel Mindlin; MORAES-PINTO, Maria Isabel de  and  WECKX, Lily Yin. Prevalence of IgG varicella zoster virus antibodies in the Kuikuro and Kaiabi indigenous communities in Xingu National Park, Brazil, before varicella vaccination. Rev. Inst. Med. trop. S. Paulo [online]. 2005, vol.47, n.3, pp. 139-142. ISSN 0036-4665.  http://dx.doi.org/10.1590/S0036-46652005000300004.

The 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 villages and three Kaiabi villages were evaluated and provided information concerning previous varicella infection. An indirect immunosorbent assay (ELISA) to detect IgG anti-VZV antibodies was performed in 224 blood samples - volunteer selection had no interference of anamnesis. IgG prevalence was 80.8% (95% Confidence Interval: 76% - 86%). The seroepidemiology of varicella in Xingu National Park prior to varicella vaccine introduction was comparable to the Brazilian national seroprevalence described in the literature, and so were the positive (98%) and the negative predictive value (41%) of the referred history.

Keywords : Varicella Zoster; Antibodies; Brazilian native Indians.

        · abstract in Portuguese     · text in English     · pdf in English