Diagnostics

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

Investigation of communities at increased risk of trachoma recrudescence & a model post-elimination surveillance strategy

Primary research question

Is there evidence of on-going or recent ocular Ct transmission in communities of northern Ghana felt to be at increased risk of recrudescence, at least two years since they were identified with Ct infection and or high anti-Pgp3 seroprevalence during pre-validation trachoma surveillance surveys?

Secondary research questions

What is the geographical extent of the boundaries of any persistent Ct infection and on-going transmission in the post-elimination setting?

What is the community-level (anti-Pgp3) prevalence of seropositivity for the multiplex bead array (MBA) (and possibly ELISA) as compared to the lateral flow assay (LFA)?

Countries: Ghana
Diseases: Trachoma

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

Understanding areas of increased trachoma risk (hotspots) through the implementation of a post validation trachoma surveillance strategy

To determine if there is evidence of on-going or recent transmission in the “hotspot” communities of increased risk two years after they were identified during the pre-validation surveys (clinical, antibody and infection data).

Countries: Ghana
Diseases: Trachoma

ClearTrachoma: Evaluation of a novel molecular rapid diagnostic device for the detection of Chlamydia trachomatis in trachoma-endemic areas

The primary aim of this study is a first evaluation (384 samples) of the DjinniChip in ocular clinical samples in a trachoma-endemic region in-country, but initially in the controlled environment of a research laboratory setting. The second aim is to determine the DjinniChips resilience and usability by evaluating its performance with a concentration series of positive control swabs in various environmental conditions (hot, dry, dusty, humid).

Countries: Tanzania
Diseases: Trachoma

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

Towards sustainability of Schistosomiasis Control: improving health of lake shore communities and engaging civil society structures, educational and health facilities in the hyper-endemic area of Mwanza, Tanzania

Schistosomiasis is among the neglected tropical diseases which are highly endemic in Tanzania, especially along and on the Island of Lake Victoria, in northwestern region. After Nigeria, Tanzania is second country in sub-Saharan Africa for having the highest prevalence of schistosomiasis infection and it is estimated that 52% of approximately 50 million people are living with the disease. Current control strategies in Tanzania focus on mass drug administration (MDA) of Praziquantel (PZQ) mainly in school children. Despite of these efforts, the burden of disease remains high, showing local infection rates of up to 97% among school children. School- based MDA alone is unlikely to have a lasting effect on transmission. Awareness creation and engagement across sectors and of civil society (cooperatives, community councils) structures will help to achieve more sustainable results. The objective of this project is to engage affected communities and civil society structures representing risk population (cooperatives, beach management units) to create awareness through e.g. CHAST (children’s hygiene and sanitation training), participation in control activities and improved health seeking behaviors. Secondarily, the study aims to institutionalize measures for early diagnosis and treatment in health facilities of Nyamagana and Ilemela district, along the Lake Victoria, northwestern Tanzania.

Countries: Tanzania
Diseases: Schistosomiasis

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

Does infection data add evidence to understanding of trachoma prevalence in low endemic areas?

To investigate the utility of an antibody test as a tool for surveillance during the elimination phase of trachoma programmes

Countries: Tanzania
Diseases: Trachoma

District Mapping Onchocerciasis and Lymphatic Filariasis in Kenya

To assess the programmatic feasibility of and determine the most appropriate age group and sample strategy for an onchocerciasis mapping survey for ivermectin-naïve areas.

Countries: Kenya

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