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Published on: July 22, 2012
Rotavirus type A and other enteric pathogens in stool samples from children with acute diarrhea on the Colombian
Delfina Urbina1, Octavio Arzuza, Gregorio Young
1Sección de Microbiología, Laboratorio del Posgrado de Microbiología, Facultad de Medicina, Universidad de Cartagena, Campus de Zaragocilla, Apartado Aéreo 0506, Cartagena, Colombia. durbina@enred.com
Insights
Rotavirus was the primary cause of acute diarrhea in Colombian children, with bacterial and parasitic co-infections also significant. This study identified key enteric pathogens affecting infants and young children.
Area of Science:
- Pediatrics
- Infectious Diseases
- Microbiology
Background:
- Acute diarrhea remains a major health concern in young children globally.
- Understanding the specific causative agents is crucial for effective treatment and prevention strategies.
Purpose of the Study:
- To determine the etiology of acute diarrhea in young children and infants in Cartagena and Sincelejo, Colombia.
- To identify the prevalence of various enteric pathogens, including viruses, bacteria, and parasites.
Main Methods:
- Analysis of 253 stool samples from children with acute diarrhea.
- Identification of enteric pathogens using microbiological and parasitological techniques.
Main Results:
- Rotavirus type A was the most frequent pathogen (36.6%), particularly in infants under 12 months.
- Bacterial pathogens included Salmonella spp. (9.0%) and Shigella spp. (8.0%).
- Parasitic infections were also common, with Entamoeba hystolitica (10%) and Giardia lamblia (4%).
- Mixed infections occurred in 37.9% of patients, and 18.6% had concurrent parasitic infections.
- The study noted the first report of Providencia alcalifaciens associated with infantile diarrhea in Colombia and the regional debut of E. coli O157:H7 and Y. enterocolitica.
Conclusions:
- Rotavirus is the leading cause of acute diarrhea in this Colombian pediatric population.
- Bacterial and parasitic co-infections are prevalent and require consideration in diagnosis and management.
- The findings highlight the importance of regional surveillance for emerging and re-emerging enteric pathogens.
Abstract:
The present study, conducted from March 1998 to July 2000, determined the etiology of acute diarrhea in 253 young children and infants from Cartagena and Sincelejo, Colombia. In 253 stool samples, the following enteric pathogens were recovered: rotavirus type A (36.6%) as the major agent, Salmonella spp (9.0%), Shigella spp (8.0%), enteric pathogenic Escherichia coli (6.0%), enteric hemorragic Esc. coli (2.8%), Providencia alcalifaciens (2.8%), Aeromonas hydrophila (2.0%), Yersinia enterocolitica (0.8%), Entamoeba hystolitica (10%), Giardia lamblia (4%), Endolimax nana (3.2%), Ascaris lumbricoides (2.8%), Ent. coli (1.2%), Balantidium coli (0.8%), Blastocystis hominis (0.8%), Dypilidium caninum (0.4%) and hook worm sp. (0.4%). Infection with more than one pathogen occurred in 96 (37.9%) patients. Rotavirus and enteric pathogenic Esc. coli were frequent. Concurrent infection by more than one parasite occurred in 18.6% of the infants. Most rotavirus infections (76.7%) occurred in infants under 12 months. Vomiting, severe dehydration and fever were frequent in children with rotavirus infection. At least one fecal marker of inflammatory diarrhea was registered in patients with bacterial infection. To our knowledge, this is first report of P. alcalifaciens associated with infantile diarrhea in Colombia and the first description of Esc. coli O157:H7 and Y. enterocolitica in our region.
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