Online Program Home
  My Program

All Times EDT

Abstract Details

Activity Number: 211 - Disease Prediction
Type: Contributed
Date/Time: Tuesday, August 10, 2021 : 1:30 PM to 3:20 PM
Sponsor: Section on Statistics in Epidemiology
Abstract #319086
Title: Comparison of Platforms for Testing Antibodies to Chlamydia Trachomatis Antigens in the Democratic Republic of the Congo and Togo
Author(s): Jessica Hoehner*
Companies: Leidos, Inc.
Keywords: antibodies; trachoma; bacterial infection; public health; bootstrapping

Trachoma, caused by repeated ocular infection with Chlamydia trachomatis (Ct), is targeted for elimination as a public health problem. Serological testing for antibodies is promising for surveillance; determining useful thresholds will require collection of serological data from settings with different prevalence of the indicator trachomatous inflammation—follicular (TF). Dried blood spots were collected during trachoma mapping in two districts each of Togo and Democratic Republic of the Congo. Anti-Ct antibodies were detected by multiplex bead assay (MBA) and three different lateral flow assays (LFA) and seroprevalence and seroconversion rate (SCR) were determined. By most tests, the district with?>?5% TF (the elimination threshold) had five–six fold higher seroprevalence and tenfold higher SCR than districts with?< ?5% TF. The agreement between LFA and MBA was improved using a black latex developing reagent. These data show optimization of antibody tests against Ct to better differentiate districts above or below trachoma elimination thresholds.

Authors who are presenting talks have a * after their name.

Back to the full JSM 2021 program