Operational research to compare the confirmatory mapping tool and xenomonitoring indicator (infectivity rate of L3 of Wuchereria bancrofti) in Monrovia to assess the necessity to implement MDA

What is the most appropriate method to evaluate the presence of W. bancrofti transmission in urban conurbations to establish if MDA is necessary for LF elimination?

Countries: Liberia

Field friendly biometry to ease cohort studies in resource-limited settings: application to the Test and Treat for onchocerciasis project in Central Cameroon

Can a biometric recognition system, in the context of “Test and Treat”, facilitate individual follow-up by linking participant data at different time-points?

Countries: Cameroon
Diseases: Loiasis | Onchocerciasis

Ov16 AP ELISA comparison in Cameroon

How does the performance of the AP ELISA compare to the Ov16 SD ELISA, when conducted in a country lab?

Countries: Cameroon
Diseases: Onchocerciasis

Production of a New Dual Antigen Test Strip as a Tool to Support Epidemiologic Assessments of Onchocerciasis

How does the performance of the new Ov16/Ov3261 test strip compare to that of the SD Ov16 RDT and the SD Ov16 ELISA?

Diseases: Onchocerciasis

Processing Ov16 ELISA for Oncho Elimination Mapping

Would the same programmatic decisions for Oncho Elimination Mapping be made based off of the Ov16 rapid diagnostic test results as compared to the Ov16 SD ELISA results?

Countries: Kenya | Malawi | Burundi
Diseases: Onchocerciasis

Lymphatic Filariasis Positive-Case Follow-up After TAS 2 in Haiti

To identify the sampling strategy for positive case follow-up after TAS 2 and TAS 3 that optimizes the chances of correctly identifying evidence of ongoing transmission, while saving program resources.

Countries: Haiti

Long term outcome of the two most commonly used surgical procedures to treat trachomatous trichiasis (TT): PLTR vs BLTR

Ascertain whether the difference in outcome (measured in rate of post-operative trachomatous trichiasis, or TT), between the posterior lamellar tarsal rotation (PLTR) and bilamellar tarsal rotation (BLTR) is sustained at four years or whether they give different results from what has been found at 1 year.

Countries: Ethiopia
Diseases: Trachoma

Antibody Responses to Chlamydia trachomatis Antigens in Trachoma-Endemic Zones of Ethiopia

To analyze the relationships between the currently used indicator for impact assessments - prevalence of the clincial sign TF - and the prevalence of infection and antibody among 1-9 year old children in hyperendemic districts prior to mass drug administration

Countries: Ethiopia
Diseases: Trachoma

Determining end markers for stopping MDA for Trachoma in Malawi

Currently MDA is stopped when TF in children aged 1-9 years is below 5%. However, the relationship between TF, presence of infection and antibody has not been studied in a sufficient number of settings to enable predictions of outcome to be confidently made based on baseline prevalence, intervention coverage, and the prevalence of disease and infection at the time of impact survey. There are several districts in Malawi with TF prevalence between 5 and 9.9% which are eligible for one year of interventions, including a single round of MDA. This study will add important data to be used to model outcomes of interventions conducted by trachoma elimination programs, and in particular, help develop operational guidelines for stopping MDA.

Countries: Malawi
Diseases: Trachoma

Testing New RDT Formats to Improve Wb123 Test Sensitivity

To test alternative rapid diagnostic test (RDT) formats for the Wb123 rapid test. In field trials, the current test format was less sensitive that FTS in post-MDA settings whereas alternative Wb123 test formats (ELISA, multiplex) were more sensitive. Our group uses new detection systems, based on nanoshells, to improve RDT performance.