Integrated Transmission Assessment Surveys (iTAS) and Onchocerciasis evaluation in areas of Co-Endemicity for both infections in Tanzania
To determine the validity and programmatic feasibility of an integrated transmission assessment survey (F-TAS), to be used to simultaneously assess Onchocerciasis (Oncho) and Lymphatic Filariasis (LF) prevalence in areas co-endemic for the two infections that have completed the recommended treatment for one or both infections.
To determine if a standardized multi-parallel-PCR assay is a more sensitive diagnostic tool for detecting Hookworm (Ancylostoma duodenale and Necator americanus), Trichuris trichiura, Ascaris lumbricoides, Strongyloides stercoralis, and Schistosoma mansoni prevalence compared to the Kato-Katz stool test.
To define a cost-effective and accurate method to map ivermectin-naïve districts for Onchocerciasis, Lymphatic Filariasis and Loiasis and identify districts eligible for safe treatment with ivermectin MDA.
What are the differences at 1 year post-baseline in the prevalence of trachoma and Ct infection in villages randomized to an enhanced antibiotic treatment regimen characterized by a routine community-wide MDA followed by two rounds of treatment targeted to children 6 months to 9 years in quick succession (1-2 weeks apart) compared to villages randomized to annual standard-of-care community-wide MDA?
Assess the overall acceptability of the 3-drug treatment in the community as compared to the 2-drug treatment
Impact of Malaria Vector Control & Status of Lymphatic Filariasis Transmission in the Lake Zone of Tanzania
To assess filarial exposure in the study population and mosquito infection status prior to and after the start of intensified malaria control interventions.
Determination of the prevalence of LF infection in districts not included in LF control activities and of the basis for integrated implementation of LF - onchocerciasis elimination strategies in potentially co-endemic areas
Field validation of the diagnostic performance of the Wb123/Ov16 biplex rapid diagnostic test and Wb123 ELISA, compared to the filariasis test strip (FTS) in a setting initially found to be non-endemic for lymphatic filariasis, in which clinical cases have been identified.