S. Chanteau et al., LOW POSITIVE PREDICTIVE VALUE OF ANTI-BRUGIA MALAYI IGG AND IGG(4) SEROLOGY FOR THE DIAGNOSIS OF WUCHERERIA-BANCROFTI, Transactions of the Royal Society of Tropical Medicine and Hygiene, 88(6), 1994, pp. 661-662
Citations number
8
Categorie Soggetti
Public, Environmental & Occupation Heath","Tropical Medicine
Enzyme-linked immunosorbent assays (ELISAs) for anti-Brugia malayi imm
unoglobulin (Ig) G and IgG(4) were evaluated on sera from 1561 subject
s in French Polynesia for the serodiagnosis of Wuchereria bancrofti fi
lariasis, compared with the test for Onchocerca gibsoni circulating an
tigen (Og4C3) as a 'gold standard'. The sensitivity of the ELISA-IgG a
nd ELISA-IgG(4) assays was 90.8% and 94.5%, and the specificity was 45
.9% and 50.7%. The positive predictive values were 41% and 45% respect
ively for an antigen prevalence rate of 30%. Thus antibody prevalences
exceeded by two-fold the antigen prevalence, which itself exceeded by
two-fold the prevalence of microfilaraemia.