Yaya Camara - Academia.edu (original) (raw)

Papers by Yaya Camara

PLOS Neglected Tropical Diseases, May 11, 2021

Background The Gambia initiated a control programme for schistosomiasis in 2015. In light of this... more Background The Gambia initiated a control programme for schistosomiasis in 2015. In light of this, recent and comprehensive data on schistosomiasis is required to effectively guide the control programme. This study aimed to evaluate the prevalence and associated risk factors of schistosomiasis among primary school children in The Gambia. Methods We utilised data from a previous study conducted in 2015 in 4 regions of The Gambia: North Bank Region (NBR), Lower River Region (LRR), Central River Region (CRR) and Upper River Region (URR). In the parent study, ten schools were selected randomly from each region. Urine and stool samples collected from 25 boys and 25 girls (7-14 years) in each school were examined for urinary schistosomiasis (Schistosoma haematobium infection) and intestinal schistosomiasis (Schistosoma mansoni infection) using urine filtration, dipstick and Kato-Katz methods. Principal findings Urinary schistosomiasis had an overall prevalence of 10.2% while intestinal schistosomiasis had a prevalence of 0.3% among the sampled school children. Prevalence of urinary schistosomiasis was significantly different among regions (χ 2 = 279.958, df = 3, p < 0.001), with CRR (27.6%) being the most endemic region, followed by URR (12.0%), then LRR (0.6%), and NBR (0.0%). Prevalence of intestinal schistosomiasis was also significantly variable among regions, with 4 of the 5 positive cases detected in CRR and 1 case in URR. Every school sampled in CRR had at least one student infected with S. haematobium, 50% of schools in URR had S. haematobium infection, and just one school in LRR had S.

Journal of Chemotherapy, 2012

Distribution of ESBL-producing enterobacteria associated to community-acquired monomicrobial urin... more Distribution of ESBL-producing enterobacteria associated to community-acquired monomicrobial urinary tract infections and antimicrobial susceptibility trends over a 9-year period Vanessa Cordeiro Dias, Vânia Lucia da Silva, Eduarda de Oliveira Firmo, Lucas Quinet de Andrade Bastos, Andre Netto Bastos, Ricardo Villela Bastos, Claudio Galuppo Diniz Department of Parasitology, Microbiology and Immunology, Institute of Biological Sciences, Federal University of Juiz de Fora, Minas Gerais, Brazil, Cortes Villela Clinical Laboratory, Juiz de Fora, Minas Gerais, Brazil

Antibiotic resistant pattern of Klebsiella pneumonia producing ESBLs ... more Antibiotic resistant pattern of Klebsiella pneumonia producing ESBLs among food handlers.</p

Infection intensity and mean egg count by urine filtration and Kato-Katz by region.</p

A map showing the four regions (coloured) in which the study had been conducted.</p

Population characteristics and prevalence of schistosomiasis.</p

Antibiotic resistant pattern of E. coli producing ... more Antibiotic resistant pattern of E. coli producing ESBLs among food handlers.</p

ESBL producing Enterobacteriaceae resistant pattern to antibiotics among food handlers.&... more ESBL producing Enterobacteriaceae resistant pattern to antibiotics among food handlers.</p

Co-endemicity of S. haematobium and S<... more Co-endemicity of S. haematobium and S. mansoni.</p

Demographic characteristics of the study food handlers in West Coast Region.</p

Sensitivity and specificity of POC-CCA against urine filtration, Kato-Katz and dipstick ... more Sensitivity and specificity of POC-CCA against urine filtration, Kato-Katz and dipstick test techniques by endemicity.</p

Distribution of the species of ESBL producing Enterobacteriaceae among food handlers in ... more Distribution of the species of ESBL producing Enterobacteriaceae among food handlers in West Coast Region.</p

PLOS Neglected Tropical Diseases, 2021

Background A national mapping survey of schistosomiasis (SCH) and soil-transmitted helminthiases ... more Background A national mapping survey of schistosomiasis (SCH) and soil-transmitted helminthiases (STH) was conducted in The Gambia in May, 2015. The survey aimed at establishing endemicity of schistosomiasis and soil-transmitted helminthiases to inform decisions on program planning and implementation of mass drug administration (MDA). Methodology/Principal findings A cross-section of 10,434 eligible school aged children (SAC), aged 7 to 14 years old were enrolled in the survey. The participants were randomly sampled from 209 schools countrywide using N/50, where N = total eligible children per school. Stool, and urine samples were provided by each child and examined for schistosomiasis and soil-transmitted helminthic infections using double Kato-Katz, urine filtration, dipstick techniques and CCA rapid test kits. Data were managed using online LINKS system enabling real-time data availability and access. Epi Info version 3.5.3 and health mapper version 4.3.2 were used to generate ou...

GSC Biological and Pharmaceutical Sciences

The introductions of advanced antibiotics have triggered complex versions of resistant genes in g... more The introductions of advanced antibiotics have triggered complex versions of resistant genes in gram-negative bacteria. In a generation witness limited discovery of antibiotics makes this phenomenon a major public health threat. This study aims to establish the fecal carriage rate of multidrug-resistant Enterobacteriaceae strains among food handlers. Data was extracted from a prospective cross-sectional study – ‘Prevalence and risk factors of fecal carriage of Extended Spectrum β-Lactamase producing Enterobacteriaceae amongst food handlers in Lower Basic Schools in West Coast region of The Gambia. The study enrolled 600 randomly selected food handlers (565 of which had complete data set) from 60 lower basic schools in 7 districts in the West Coast Region of The Gambia. Stool samples were collected from the participants and screened for resistance to cefotaxim. Isolated organisms were further tested for susceptibility to cephalosporins, carbapenems, fluoroquinolones and other familie...

International journal of food science, 2017

Background: Most of the world population is approximately infected with intestinal parasites, the... more Background: Most of the world population is approximately infected with intestinal parasites, the burden of this infection is mainly found in people living in developing countries where hygiene and environmental sanitation are poor. Gambia is not an exception to this phenomenon of poor hygiene and sanitation, therefore is at high risk of intestinal parasitic burden. Thus, this study seeks to investigate the prevalence and risk factors of parasitic infections among food handlers who sells food at Lower Basic Schools in the West Coast Region in The Gambia. Methods: This cross-sectional descriptive study used 540 stool samples stored at 10% formaldehyde collected from different food handlers during a study titled (Prevalence and risk factors of fecal carriage of Extended Spectrum β-Lactamase producing Enterobacteriaceae amongst food handlers in Lower Basic Schools in West Coast Region of The Gambia). Stool samples were examined microscopically using both normal saline and iodine for id...

PLOS ONE

Introduction In 2011, member states of the World Health Organization (WHO) Africa Regional Office... more Introduction In 2011, member states of the World Health Organization (WHO) Africa Regional Office (AFRO) resolved to eliminate Measles by 2020. Our study aims to assess The Gambia’s progress towards the set AFRO measles elimination target and highlight surveillance and immunisation gaps to better inform future measles prevention strategies. Material and methods A retrospective review of measles surveillance data for the period 2011–2019, was extracted from The Gambia case-based measles surveillance database. WHO—UNICEF national coverage estimates were used for estimating national level MCV coverage. Measles post campaign coverage survey coverage estimates were used to estimate national measles campaign coverage. Results One hundred and twenty-five of the 863 reported suspected cases were laboratory confirmed as measles cases. More than half (53.6%) of the confirmed cases have unknown vaccination status, 24% of cases were vaccinated, 52.8% of cases occurred among males, and 72.8% cas...

International Journal of Nutrition and Food Sciences

S OF PLENARY PRESENTATIONS A3 ABSTRACTS OF ORAL PRESENTATIONS A5S OF ORAL PRESENTATIONS A5 ABSTRA... more S OF PLENARY PRESENTATIONS A3 ABSTRACTS OF ORAL PRESENTATIONS A5S OF ORAL PRESENTATIONS A5 ABSTRACTS OF POSTER PRESENTATIONS A16S OF POSTER PRESENTATIONS A16

PLOS ONE

Background Studies in Sub Saharan Africa have shown that the Circulating Cathodic Antigen point-o... more Background Studies in Sub Saharan Africa have shown that the Circulating Cathodic Antigen point-ofcare-test (POC-CCA) is more accurate in the detections of S. mansoni than the microscopic Kato-Katz technique but less is known about the accuracy of this rapid test in detecting S. haematobium infections. This study was intended to evaluate the field accuracy of POC-CCA as a rapid test kit for schistosomiasis mapping in The Gambia. Methods This prospective study was conducted in 4 regions in the country. Ten schools were randomly selected from each region, and a total of 2018 participants whose ages range from 7 to 14 years were enrolled in the study. Stool and urine samples were collected from each participant from May to June 2015, and tested for S. haematobium and S. mansoni infections in field and laboratory settings. The tests conducted included POC-CCA, double Kato-Katz slides, urine filtration and dipstick for hematuria. Results Of the 1954 participants that had complete data, the mean age of participants was 9.9 years. The prevalence of children infected with S. haematobium, using urine filtration technique was 10.1% (95% CI: 8.87-11.55). Central River Region had the highest level of urinary schistosomiasis with a prevalence of 28.0% (24.13-32.12).The lowest urinary schistosomiasis prevalence of 0.6% (0.12-1.86) was found in Lower River Region and North Bank Region had no cases of schistosomiasis detected. Only 5 participants were infected with S. mansoni. Using urine filtration as reference standard for the detection of S. haematobium, the sensitivity and specificity of POC-CCA was 47.7% and 75.8%.