Impact of Mass Drug Administration on Lymphatic Filariasis in Kenya
Author Information
Author(s): Njenga Sammy M, Mwandawiro Charles S, Wamae C Njeri, Mukoko Dunstan A, Omar Anisa A, Shimada Masaaki, Bockarie Moses J, Molyneux David H
Primary Institution: Kenya Medical Research Institute (KEMRI)
Hypothesis
Can mass drug administration (MDA) effectively reduce the prevalence of lymphatic filariasis (LF) infection even with missed treatment rounds?
Conclusion
The study found significant reductions in lymphatic filariasis infection prevalence despite missed rounds of mass drug administration.
Supporting Evidence
- The overall prevalence of microfilaraemia decreased from 20.9% in 2002 to 0.9% in 2009.
- Children born after the start of the MDA were found to be negative for filarial antigen in 2009.
- Despite missed MDA rounds, significant reductions in infection prevalence were observed at each survey.
Takeaway
The study shows that giving medicine to fight lymphatic filariasis can still work well, even if some doses are missed, especially when people use mosquito nets.
Methodology
The study monitored eight villages over eight years, assessing the impact of four rounds of MDA on LF infection prevalence through blood samples and surveys.
Potential Biases
Potential bias due to reliance on self-reported treatment adherence and the literacy levels of participants affecting informed consent.
Limitations
Confounding variables such as the use of insecticide-treated nets make it difficult to attribute the reduction in infection solely to MDA.
Participant Demographics
Participants were from eight rural villages in Malindi District, Kenya, with a population range of 600-900 individuals.
Statistical Information
P-Value
<0.001
Confidence Interval
95% CI
Statistical Significance
p<0.001
Digital Object Identifier (DOI)
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