Abstract

Kiki-Barro PCM*, Aka Hepkangjin J, Kassi FK, Henriette Vanga-Bosson H, Konaté A, Angora EK, Akoua Valérie Bedia-Tanoh AV, Djohan V, Kamagaté T, Sébastien Miezan, N

The-conventional Baermann device components are a constraint during its use for field investigations. A simplified version is proposed in order to assess the agreement of the measurements and the cost between both devices. 101 stool samples from HIV positive subjects were examined using both devices. The positivity rate was 0.9-% (1/101). The stool tested positive was subjected to 7 successive dilutions by means of a Strongyloides stercoralis larvae free stool. Each dilution, considered as a sample, was used to compare the accuracy agreement of both devices. The Student t test did not show any significant variation in the number of the extracted larvae per gram of stool (p=0.227). The correlation coefficient (0.9991) close to 1 indicates a high reliability between both devices. The measurement of the larvae (per gram of stool) using both devices agree as shown by the Bland Altman analysis, with a positive bias. Bias = 0.5 ± 1.069; 95% CI (- 0.39 to 2.59). The cost of the analysis was estimated at $ US 30.31 for the conventional device versus $US 2.23 for the simplified one. The latter is an alternative for the strongyloidiasis diagnosis during large-scale investigations in countries with limited resources.