Publications by authors named "Nyamwaya D"

Chikungunya fever (CHIKF) is an arboviral illness that was first described in Tanzania (1952). In adults, the disease is characterised by debilitating arthralgia and arthritis that can persist for months, with severe illness including neurological complications observed in the elderly. However, the burden, distribution and clinical features of CHIKF in children are poorly described.

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Background: Neurological complications due to chikungunya virus (CHIKV) infection have been described in different parts of the world, with children being disproportionately affected. However, the burden of CHIKV-associated neurological disease in Africa is currently unknown and given the lack of diagnostic facilities in routine care it is possible that CHIKV is an unrecognized etiology among children with encephalitis or other neurological illness.

Methods And Findings: We estimated the incidence of CHIKV infection among children hospitalized with neurological disease in Kilifi County, coastal Kenya.

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Article Synopsis
  • Chikungunya fever (CHIKF), first identified in Tanzania in 1952, is endemic in coastal Kenya, contributing to 12.7% of febrile cases in primary healthcare settings.
  • A 5-year study tracked 3,500 children, revealing high CHIKF incidence rates, particularly among those under 1 year old, and identified 19 children with recurrent episodes.
  • Genetic analysis showed that local CHIKV strains significantly differed from those linked to the 2004 East African outbreak, suggesting ongoing transmission and a potential public health issue beyond epidemic years.
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The purpose of this study was to determine the ecology of the common arboviral mosquito vectors in Mombasa, Kilifi and Malindi urban areas of coastal Kenya. Mosquito larvae were collected using standard dippers and pipettes. Egg survivorship in dry soil was evaluated by collecting soil samples from dry potential larval developmental sites, re-hydrating them for hatching and rearing of the eventual larvae to adults.

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Zika virus (ZIKV) was first discovered in East Africa in 1947.  ZIKV has caused microcephaly in the Americas, but it is not known whether ZIKV is a cause of microcephaly in East Africa. We used surveillance data from 11,061 live births at Kilifi County Hospital in coastal Kenya between January 2012 and October 2016 to identify microcephaly cases and conducted a nested case-control study to determine risk factors for microcephaly.

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Background: Brucella spp. is a zoonotic bacterial agent of high public health and socio-economic importance. It infects many species of animals including wildlife, and people may get exposed through direct contact with an infected animal or consumption of raw or undercooked animal products.

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Background: West Nile fever virus is a zoonotic arboviral infection maintained in a sylvatic cycle involving mosquito vectors and birds. It is one the arboviruses whose geographical range is expanding because of climate and land use changes that enhance the densities of mosquitoes and promote mosquito-bird-human interactions. We carried out a survey to determine the reservoirs of WNV among wild birds in Tana River and Garissa counties, Kenya.

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Background: This paper describes a project to strengthen the capacity for health promotion in two Provinces in South Africa. The project draws on the key health promotion capacity dimensions of partnership and networking, infrastructure, problem-solving capacity, and knowledge transfer. The project was carried out in a partnership between the Provinces, the Ministry of Health of South Africa, the government of Flanders, Belgium, and the World Health Organization (WHO).

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In 2007, the World Health Organization, together with United Nations and international organization as well as experts, met to draw upon existing evidence and practical experience from regions, countries and individual schools in promoting health through schools. The goal of the meeting was to identify current and emerging global factors affecting schools, and to help them respond more effectively to health, education and development opportunities. At the meeting, a Statement was developed describing effective approaches and strategies that can be adopted by schools to promote health, education and development.

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HIV prevention through peer education and condom promotion among truck drivers and their sexual partners is described. Trends during an initial 18-month intensive phase, followed by a 24-month maintenance phase, were monitored with surveys. Trends for self-reported condom use were: increase among men (56 to 74%) during the first phase with a decrease (72%) during the maintenance phase.

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Existing health information systems in developing countries are managed and used mainly by biomedically trained personnel and by general healthcare administrators. They focus on epidemiology, service utilization and finance; they generate little of the socio-cultural data needed for developing and adjusting health services and disease control programmes to local health-related perceptions, values and resources. This paper reviews some of the published literature on socio-cultural factors related to health and summarizes the findings of a health household interview study in rural Kenya.

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Objective: To describe the demographic characteristics and HIV-related risk behaviors of adolescents frequenting truck stops along the Trans-Africa Highway in Kenya.

Methods: A cross-sectional study of 200 adolescents (52% female) aged 15-19 years was conducted at the Malaba, Sachangwan and Mashinari truck stops in Kenya. A standardized questionnaire assessing the adolescents' demographic characteristics and sexual behavior was administered.

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The article discusses the complex interrelationship between Pokot indigenous medicine and Western medicine. Pokot concepts of the causation of illness are examined as a prelude to the main argument, which states that though these concepts of causation influence the use made of both indigenous and Western forms of therapy, a number of other factors also affect this use. The relationship between the two types of medicine is shown to be dynamic and that it can be competitive, supplementary or complementary.

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