Etiology and pathogenicity of bacterial isolates: a cross sectional study among diarrheal children below five years in central regions of Kenya

Introduction: bacterial agents are among pathogens implicated to cause diarrhea in children resulting to huge mortality and morbidities. Bacterial etiologies causing diarrhea in children below five years are rarely investigated in Central Kenya, which would otherwise guide prescription and target health education.Methods: a cross-sectional study approach was applied on 163 randomly selected stool samples from children below five years who presented with diarrhea in Murang`a and Muriranja`s hospitals. The objective was to determine the bacterial agents of diarrhea. Enteric bacterial pathogens were cultured using appropriate media and identified. Statistical analyses were performed using STATA v.13. Chi-square or Fisher exact-test were used to check for evidence of relationship whenever applicable.Results: there were nearly equal distributions in gender 86 (52.8%) female vs. 77 (47.2%) male, majority (35.6%) aged between 0-12 months. Bacterial isolates were highly diverse in female than the male, children aged 49-60 months and least among those aged 0-12 months. A total of 188 bacterial isolates belonging to 11 genera were recovered. The predominant bacteria was nonpathogenic Escherichia coli 85 (45.2%), while 13 (6.9%) Escherichia coli were positive for virulence genes, including 8 (4.3%) positive for LT and STp Shiga-like or Enterotoxigenic Escherichia coli, 3 (1.6%) positive for eae and bfpA Enteropathogenic Escherichia coli and 2 (1.1%) positive for Enteroaggregative Escherichia coli gene. Others included: Salmonella 21 (11.2%), Pseudomonas 14 (7.4%), Shigella 14 (7.4%), Klebsiella 12 (6.4%), Aeromonas 8 (4.3%), Enterobacter 7 (3.7%), Proteus 8 (4.3%), Citrobactor 3 (1.6%), Yersinia 2 (1.1%) and Vibrio 1 (0.5%).Conclusion: salmonella was the major bacterial isolate and majority of the bacteria were statistically significant cause of diarrhea (p=0.001)

Increase in the Detection Rate of Viral and Parasitic Enteric Pathogens among Egyptian Children with Acute Diarrhea

Introduction: Acute diarrhea continues to be a major cause of morbidity and mortality in children from developing countries. Determination of the frequency of diarrhea in an area; along with the proportion of disease caused by specific enteric agents of different origins; is considered the first step in controlling diarrheal diseases. Methodology: From 2005 to 2007; a hospital-based surveillance was conducted in two locations in Egypt to determine the causes of acute diarrhea in children younger than 5-years seeking treatment. Five additional enteric viral and parasitic pathogens were tested using commercially-available enzyme immunoassays (EIA) to re-evaluate the prevalence of diarrheal pathogens in undiagnosed cases.Results: Adenovirus; astrovirus; norovirus and G. lamblia were detected as the sole pathogen in 2 (n=34); 3 (n=56); 9 (n=191) and 7 (n=146) of the cases; respectively. E. histolytica was never detected as the sole pathogen. The percentage of diarrheal cases with a known cause increased significantly; from 48 (n=1;006) to 74 (n=1;568) (P0.0001). Conclusion: In our study; the incorporation of immunoassays yielded useful data in identifying pathogens in previously pathogen-negative diarrhea cases

Parasitological findings in stool samples of children under five years in an inland rural community in Ghana

According to the results there was no significant difference between the number of positive cases among the diarrhoeal and non-diarrhoeal subjects but a prevalence rate of 44.2 per cent and 20.2 per cent of Giardia lamblia among the diarrhoeal and controls respectively is significant