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

• Published in: Revista do Instituto de Medicina Tropical de São Paulo
• Main Authors: Rodolfo Notario, Noemi Borda, Telma Gambande, Emma Sutich
• Format: Article in Journal/Newspaper
• Language: English
• Published: Universidade de São Paulo (USP) 1996
• Subjects: Acute diarrhea; Enteropathogenic agents-species; Serovars; Rosario; Argentina; Arctic medicine. Tropical medicine; RC955-962; Infectious and parasitic diseases; RC109-216; Aguda; Arctic
• Online Access: https://doi.org/10.1590/S0036-46651996000100002; https://doaj.org/article/a292050efa0849849449449a8c641608

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. ...