Publications by authors named "J Gikonyo"
Cyanobacteria occasionally self-immobilize and form spherical aggregates. This photogranulation phenomenon is central for oxygenic photogranules, which present potential for aeration-free and net-autotrophic wastewater treatment. Light and iron are tightly coupled via photochemical cycling of Fe, suggesting that phototrophic systems continually respond to their combined effects.
View Article and Find Full Text PDFFilamentous cyanobacteria are an essential element of oxygenic photogranules for granule-based wastewater treatment with photosynthetic aeration. Currently, mechanisms for the selection of this microbial group and their development in the granular structure are not well understood. Here, we studied the characteristics and fate of iron in photogranulation that proceeds in a hydrostatic environment with an activated sludge (AS) inoculum.
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- Rotaviruses are a major cause of gastroenteritis in young children, and a monovalent vaccine (Rotarix) was introduced in Kenya in 2014 to combat this issue, but no studies have been done to analyze the circulating genotypes post-vaccination.* -
- This study collected stool samples from vaccinated children under 5 with diarrhea in Nairobi County to determine the prevalence and types of rotavirus genotypes since the vaccine's introduction.* -
- Results showed a shift in rotavirus strains; while G1P[8] dominance decreased, G2P[4] and G9P[8] genotypes increased, indicating a change in strain diversity and underscoring the need for ongoing
Rotaviruses are one of the leading etiological agents of gastroenteritis in young children, for which a monovalent G1P(8) vaccine has been provided for free in Kenyan since July 2014. The main objective was to estimate the post vaccine prevalence and seasonal distribution of rotavirus diarrhea in children less than 5 years in Nairobi County, Kenya. Rotavirus positive samples were collected from children below 5 years of age in two hospitals within Nairobi County where vaccination status was card-confirmed.
View Article and Find Full Text PDFBackground: Gastroenteritis is a public health concern due to high morbidity and mortality among children. Rotaviruses are the leading etiological agents of severe gastroenteritis in children and accounts for more than half a million deaths per year in Africa. The study aimed at investigating the rotavirus genotypes that were circulating in children aged 5 years and below in and around Mukuru slums in Nairobi County Kenya.
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