Feb 27, 2013

Shigella in Brazilian children with acute diarrhoea: prevalence, antimicrobial resistance and virulence genes

Memórias do Instituto Oswaldo Cruz
Mireille Ângela Bernardes SousaPaula P Magalhães

Abstract

Diarrhoeal disease is still considered a major cause of morbidity and mortality among children. Among diarrhoeagenic agents, Shigella should be highlighted due to its prevalence and the severity of the associated disease. Here, we assessed Shigella prevalence, drug susceptibility and virulence factors. Faeces from 157 children with diarrhoea who sought treatment at the Children's Hospital João Paulo II, a reference children´s hospital in Belo Horizonte, state of Minas Gerais, Brazil, were cultured and drug susceptibility of the Shigella isolates was determined by the disk diffusion technique. Shigella virulence markers were identified by polymerase chain reaction. The bacterium was recovered from 10.8% of the children (88.2% Shigella sonnei). The ipaH, iuc, sen and ial genes were detected in strains isolated from all shigellosis patients; set1A was only detected in Shigella flexneri. Additionally, patients were infected by Shigella strains of different ial, sat, sen and set1A genotypes. Compared to previous studies, we observed a marked shift in the distribution of species from S. flexneri to S. sonnei and high rates of trimethoprim/sulfamethoxazole resistance.

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References

Mentioned in this Paper

Morbidity Aspects
Acute Diarrhea
Trimethoprim
Polymerase Chain Reaction Analysis
Acute Disease
Shigella sonnei bacterium
Idiopathic Pulmonary Hypertension
Dysentery, Shigella Flexneri
SETD1A gene
Shigella

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