ABSTRACT
The prevalence of various pathotypes of Escherichia coli was investigated during a case-control study conducted in children diarrhoea in Yaounde. Isolates obtained from the stools samples of children aged 6 months to 5 years were selected on phenotypic basis; and identified by virulence genes detection using polymerase chain reactions. The most prevalent pathotype was enteroaggregative Escherichia coli (25.8). Enteropathogenic Escherichia coli (3.6); enterotoxigenic Escherichia coli (1); and enteroinvasive Escherichia coli (0.2) followed. No shiga toxin-producing Escherichia coli were identified. Enteroaggregative Escherichia coli was not associated with diarrhoea (cases 26.1; controls 25.5; P=0;887); unlike enteropathogenic Escherichia coli (cases 6.7; controls 1; P=0.003). Investigations into documented potentials of enteroaggregative Escherichia coli in causing diarrhoea and other related pathologies indicated that it could be a major public health threat in Cameroon despite the fact that it was not found associated with clinical diarrhoeal cases in this study
Subject(s)
Epilepsy , Escherichia coli , Hazardous Substances , Public HealthABSTRACT
Une enquete transversale avec echantillonnage en grappes; a permis d'estimer la prevalence instantanee des deficiences visuelles en zone rurale de foret au Cameroun. Le taux de prevalence standardise de la cecite bilaterale est egal a 1;2 pour cent; celui de la baisse de vision bilaterale a 4 pour cent et celui de la cecite unilaterale a 1;8 pour cent. La cataracte senile est la cause principale de deficience visuelle. Les opacites corneennes totales ou centrales sont la deuxieme cause de deficience et concernent 8 pour cent de l'ensemble des deficients. Au vu de ces estimations il semble opportun d'envisager l'elaboration d'un programme national de lutte adequat