Publications by authors named "Mwandawiro C"

Background: Treatments for soil-transmitted helminthiases face challenges, especially in addressing Trichuris trichiura. Combination regimens, particularly of ivermectin and albendazole, are promising. We aimed to assess the safety, efficacy, and palatability of a combination tablet for the treatment of T trichiura, hookworm, and Strongyloides stercoralis infections among school-aged children in Ethiopia, Kenya, and Mozambique.

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Background: Soil-transmitted helminths (STH) and schistosomiasis comprise the most wide-spread NTDs globally. Preventative chemotherapy is a cost-effective approach to controlling morbidity of both diseases, but relies on large scale surveys to determine and revise treatment frequency. Availability of detailed information on survey costs is limited despite recent methodological surveying innovations.

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Article Synopsis
  • Soil-transmitted helminthiasis (STH) mainly affects impoverished areas, and this study uses model-based geostatistics to map disease risk and improve predictions of STH prevalence by incorporating remotely sensed data.
  • The research analyzes data from 1551 schools in Kenya, comparing geostatistical models with and without spatially referenced covariates to assess how well they predict STH prevalence classifications.
  • Results show that the model using covariates provided better accuracy in classifying districts and reduced uncertainty in predictions, highlighting the potential for enhanced control strategies for STH.
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  • Lymphatic filariasis (LF) is a neglected tropical disease caused by mosquito-borne parasites affecting 51 million people globally, with mass drug administration recommended by WHO in endemic areas like coastal Kenya.
  • In 2022, a study collected over 18,000 mosquitoes from LF-endemic counties in Kenya to analyze infection rates of Wuchereria bancrofti, utilizing molecular xenomonitoring methods.
  • Results indicated higher infection rates in Kilifi County at 35.4% compared to 5.3% in Taita Taveta, with major vectors identified including An. rivulorum, An. funestus, and An. arabiensis, highlighting the need for targeted interventions.
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  • Trichuris trichiura is a parasitic worm causing intestinal issues, and the typical treatment is albendazole, which works better when combined with ivermectin.
  • This article focuses on developing pharmacokinetic models and understanding how this drug combination works based on data from clinical trials involving healthy adults and infected children and adolescents.
  • Findings showed both drugs had similar absorption characteristics, and the chosen dosages in the trial were deemed suitable for future testing in larger studies.
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Soil transmitted helminthiasis (STH), Schistosoma haematobium and malaria co-infection lead to increased susceptibility to other infections and poor pregnancy outcomes among women of reproductive age (WRA). This study sought to establish risk factors, burden of co-infection with STH, S. haematobium and Plasmodium sp.

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Article Synopsis
  • Soil-transmitted helminthiasis (STH) is a significant public health issue in Kenya, particularly in Narok County, where the National School Based Deworming Program aimed to reduce STH infections to less than 1%, yet the prevalence remains over 20%.
  • A study involving 514 school-aged children in Narok County revealed an overall STH infection prevalence of 24.6%, with the common parasites identified being Trichuris trichiura and Ascaris lumbricoides.
  • Factors such as school attendance at Karda and Nkarano were notably linked to increased risks of STH infection, indicating specific schools require targeted interventions despite the existing deworming efforts.
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Observational evidence suggests that household floors may be an important domain for the transmission of enteric and parasitic infections. However, little work has been done to investigate how household floors can become contaminated with human and animal faeces. This study uses a mixed methods approach to postulate the proximal and distal determinants of household floor contamination with faeces in groups of rural villages in 3 counties in Kenya (Bungoma, Kwale and Narok).

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Objectives: Kenya has implemented a national school-based deworming program, which has led to substantial decline in the prevalence of soil-transmitted helminths (STHs), although some pockets of infections remain. To effectively design an STH control program that leads to significant reductions of there is a need to understand the drivers of persistent infection despite ongoing treatment programs.

Methods: This study was conducted between July and September 2019 at the south coast of Kenya, using a two-stage sampling design.

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Kenya is among the countries endemic for soil-transmitted helminthiasis (STH) with over 66 subcounties and over 6 million individuals being at-risk of infection. Currently, the country is implementing mass drug administration (MDA) to all the at-risk groups as the mainstay control strategy. This study aimed to develop and analyze an optimal control (OC) model, from a transmission interruption model, to obtain an optimal control strategy from a mix of three strategies evaluated.

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Background: There is a lack of evidence on the effectiveness of livelihood interventions amongst people with disabilities. In many countries, self-employment or microentrepreneurship is a dominant source of livelihoods for people with disabilities and their caregivers. However, this group may face heightened barriers to successful microentrepreneurship, including discrimination, exclusion from training or inaccessible transport, infrastructure and communication systems.

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Anaemia surveillance has overlooked school-aged children (SAC), hence information on this age group is scarce. This study examined the spatial variation of anaemia prevalence among SAC (5-14 years) in western Kenya, a region associated with high malaria infection rates. A total of 8051 SAC were examined from 82 schools across eight counties in Western Kenya in February 2022.

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Background: Kenya is endemic for soil-transmitted helminths (STH) with over 6 million children in 27 counties currently at-risk. A national school-based deworming programme (NSBDP) was launched in 2012 with a goal to eliminate parasitic worms as a public health problem. This study used model-based geostatistical (MBG) approach to design and analyse the impact of the NSBDP and inform treatment strategy changes.

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Global access to deworming treatment is one of the public health success stories of low-income countries in the twenty-first century. Parasitic worm infections are among the most ubiquitous chronic infections of humans, and early success with mass treatment programmes for these infections was the key catalyst for the neglected tropical disease (NTD) agenda. Since the launch of the 'London Declaration' in 2012, school-based deworming programmes have become the world's largest public health interventions.

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Human mobility contributes to the spatial dynamics of many infectious diseases, and understanding these dynamics helps us to determine the most effective ways to intervene and plan surveillance. In this paper, we describe a novel transmission model for the spatial dynamics of hookworm, a parasitic worm which is a common infection across sub-Saharan Africa, East Asia and the Pacific islands. We fit our model, with and without mobility, to data obtained from a sub-county in Kenya, and validate the model's predictions against the decline in prevalence observed over the course of a clustered randomized control trial evaluating methods of administering mass chemotherapy.

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Article Synopsis
  • - Soil-transmitted helminthiasis (STH) remains a major health issue in Sub-Saharan Africa, particularly among school children in Kenya, where over five million children have been treated annually since 2012, yet some regions show slow declines in infection rates despite ongoing mass drug administration efforts.
  • - A mixed methods cross-sectional study in three Kenyan counties involved interviewing 1,874 school children and conducting focus group discussions with parents to examine factors influencing the persistent prevalence and intensity of STH infections.
  • - Key findings indicated a 30.8% prevalence of STH infections, with significant associations found between infection rates and factors like geographical location and poor hygiene practices, while parents highlighted poor water sanitation and the lack of community involvement in
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Soil-transmitted helminths (STH) are targeted for control through mass drug-administration campaigns to prevent morbidity affecting at-risk groups in endemic regions. Although broadly successful, the use of albendazole and mebendazole achieved variable progress, with deficiencies against and a predictable low efficacy against . Novel drug combinations offer a potential solution, providing they can be delivered safely and maintain efficacy against all STH species.

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Background: The increasing trend of drugs and substances abuse (DSA) by different age groups and gender in parts of Kenya is not only a socio-economic problem but a public health concern. There is a need to determine prevalence, types and patterns of DSA by age and gender in order to develop all-inclusive and long-term strategies to prevent and manage the DSA within different communities. In this study we determined the prevalence of DSA, types and patterns of drugs and substances being abused and risk factors associated with this abuse.

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As the world rallies toward the endgame of soil-transmitted helminths (STH) elimination by the year 2030, there is a need for efficient and robust mathematical models that would enable STH programme managers to target the scarce resources and interventions, increase treatment coverage among specific sub-groups of the population, and develop reliable surveillance systems that meet sensitivity and specificity requirements for the endgame of STH elimination. However, the considerable complexities often associated with STH-transmission models underpin the need for specifying a large number of parameters and inputs, which are often available with considerable degree of uncertainty. Additionally, the model may behave counter-intuitive especially when there are non-linearities in multiple input-output relationships.

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Molecular surveillance of Plasmodium falciparum parasites is important to track emerging and new mutations and trends in established mutations and should serve as an early warning system for antimalarial resistance. Dried blood spots were obtained from a Plasmodium falciparum malaria survey in school children conducted across eight counties in western Kenya in 2019. Real-time PCR identified 500 P.

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Article Synopsis
  • - The study investigated the co-infection of Schistosoma haematobium, soil transmitted helminthes (STH), and malaria among women of reproductive age in Kwale County, Coastal Kenya, highlighting the need to address this neglected demographic.
  • - Out of 534 women surveyed, the prevalence rates for Schistosoma haematobium, malaria, and STH were found to be 3.8%, 4.9%, and 5.6% respectively, with low co-infection rates being observed.
  • - Among pregnant women, co-infection rates with Schistosoma haematobium and malaria were slightly higher at 2.6%, while co-infection with STH was very
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Soil-transmitted helminths (STH) are the most prevalent pathogens among the group of neglected tropical diseases (NTDs). The Kato-Katz technique is the diagnosis method recommended by the World Health Organization (WHO) although it often presents a decreased sensitivity in low transmission settings and it is labour intensive. Visual reading of Kato-Katz preparations requires the samples to be analyzed in a short period of time since its preparation.

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The relationship between community prevalence of and the burden of severe, life-threatening disease remains poorly defined. To examine the three most common severe malaria phenotypes from catchment populations across East Africa, we assembled a dataset of 6506 hospital admissions for malaria in children aged 3 months to 9 years from 2006 to 2020. Admissions were paired with data from community parasite infection surveys.

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Soil-transmitted helminths (STH) are among the most common parasitic infections globally, disproportionately affecting children. Treatment of STH in Kenya is often targeted at preschool (PSAC) and school aged (SAC) children delivered through annual mass drug administration (MDA) in primary schools. Understanding group-specific prevalence and dynamics between treatment and coverage is critical for continued treatment success.

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