Species and serovars of enteropathogenic agents associated with acute diarrheal disease in Rosario, Argentina Espécies e serovariantes de agentes enteropatogênicos associados com diarréia aguda em Rosario, Argentina
We report the most frequent species and serovars of enteropathogenic organisms in Rosario from 1985 to 1993. Enteropathogenic Escherichia coli was the most prevalent agent affecting 144/570 (25.2%) children; 0111 represented 41.8%, 055: 13.6%, 0119: 12.7%. Among enterotoxigenic E. coli (ETEC) the mo...
Published in: | Revista do Instituto de Medicina Tropical de São Paulo |
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Main Authors: | , , , |
Format: | Article in Journal/Newspaper |
Language: | English |
Published: |
Universidade de São Paulo (USP)
1996
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Subjects: | |
Online Access: | https://doi.org/10.1590/S0036-46651996000100002 https://doaj.org/article/a292050efa0849849449449a8c641608 |
Summary: | We report the most frequent species and serovars of enteropathogenic organisms in Rosario from 1985 to 1993. Enteropathogenic Escherichia coli was the most prevalent agent affecting 144/570 (25.2%) children; 0111 represented 41.8%, 055: 13.6%, 0119: 12.7%. Among enterotoxigenic E. coli (ETEC) the most frequent were ETEC-ST 0128:H21 and 0153:H45. Shigella spp were isolated in 8.8%; S.flexneri: 7%, principally type 2 (59.5%); S. sonnei: 1.6%, and S. dysenteriae type 2: 0.2%. Campylobacter spp were found in 6.1% of patients; C.jejuni: 4.6%; C. coli: 1.4% and C. lari: 0.2%; except groups 0 13,50 and 0 4 (2 cases each), no predominant serogroups were found. Salmonella was isolated in 2.8% of cases, being the predominant serovar S. typhimurium until 1986, but a dramatically increase of cases due to S. enteritidis was observed since 1987. There was 1.9% of Aeromonas spp and 2 cases due to Vibrio cholerae non 0-1. No Yersinia was found. In patients with gastroenteritis due to Shigella, Campylobacter, Salmonella, or EPEC as the unique pathogen, leukocytes were observed in the faeces in 70%, 50%, 20%, and 10% of cases respectively. Apresentamos as espécies e serovars mais frequentes dos microorganismos enteropatógenos entre 1985 e 1990 em Rosario. Escherichia coli enteropatogênica (EPEC) foi a que predominou, afetando 144/570 (25,2%) crianças; 0111 representou 41,8%, 055 13,6%, 0119 12,7%. Entre as E. coli enterotoxigênicas (ETEC), ETEC-ST 0128:H21 e 0153:H45 foram as mais frequentes. Entre os 570 pacientes, Shigella spp. foi diagnosticada em 50 (8,8%); S. flexneri 7%, principalmente do tipo 2 (59,5%), S. sonnei 1,6% e S. dysenteriae tipo 2 (1%). Foram encontrados Campylobacter spp em 6,1% dos pacientes; C. jejuni 4,6%, C. coli 1,4% e C. lari 0,2%; exceto os grupos 0 13/50 e 0 4 (dois de cada um), não foram encontrados serogrupos predominantes. Salmonella foi encontrada em 2,8% dos casos, sendo o serovar S. typhimurium o predominante até 1986, mas desde 1987, foi observado um aumento importante de casos por S. ... |
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