Asymptomatic salmonellosis among children in day-care centers in Mérida, Yucatan, Mexico

Oberhelman, Richard A.; Flores–Abuxapqui, Javier Jesús; Suárez-Hoil, G J; Puc-Franco, Miguel A.; Heredia-Navarrete, Mario R; Vivas-Rosel, Maria; Mera, Robertino M.; Gutiérrez-Cogco, L

doi:10.1097/00006454-200108000-00014

Cited by 16 publications

(19 citation statements)

References 16 publications

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“…This finding is consistent with those of other authors who have found a significant increase in the isolation rate of Salmonella strains from symptomatic and asymptomatic aboriginal children in Western Australia [18], among asymptomatic children in daycare centers in Yucatán, México [21], and in children in low-and middle-income countries [22]. It is possible that repeated infections resulted in gradual acquisition of immunity, which over time may reduce the incidence of clinical disease.…”

Section: Discussionsupporting

confidence: 92%

Profiles of enteropathogens in asymptomatic children from indigenous communities of Mérida, Venezuela

Velasco

González

Díaz

et al. 2011

J Infect Dev Ctries

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Introduction: In Latin America, gastrointestinal infections represent one of the main causes of death among indigenous groups, with a mortality rate three times greater than in the general population. In this study, the carrier state of enteropathogens and the epidemiological risk factor in asymptomatic children from indigenous communities of Mérida, Venezuela, were determined. Methodology: Fifty-eight healthy children, 5 years of age and under, were clinically and epidemiologically evaluated. Fecal samples were tested for a range of classic enteropathogens. Antimicrobial susceptibility tests (AST) were performed by dilution methods. Results: Of the specimens studied, there were 34 (58.6%) positive samples, and a single enteropathogen was detected in 22 (64.6%) of these. Associations of two and three enteropathogens were observed in 10 (29.3%) and two (5.8%) cases, respectively. Blastocystis hominis (16; 47.0%) and Salmonella spp. (15; 43.9%) were the most frequently detected enteropathogens. Carriage of enteropathogens was most frequent in children older than two years. The variety of food in the daily diet was the risk factor strongly associated with the presence of parasites and/or enteric bacteria (p = 0.024  0.05 and p = 0.000  0.05, respectively). The majority of these bacteria were susceptible to the antibiotics tested in vitro. Conclusion: This study shows a high prevalence of enteropathogen carriage in asymptomatic children aged five and under from indigenous communities; this result is statistically related to the consumption of food. These findings stress the need of continuous epidemiological surveillance in vulnerable populations, as an important step to prevent the morbidity and mortality due to gastrointestinal infections.

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Section: Discussionsupporting

confidence: 92%

Profiles of enteropathogens in asymptomatic children from indigenous communities of Mérida, Venezuela

Velasco

González

Díaz

et al. 2011

J Infect Dev Ctries

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“…Shigella and Salmonella were identified by standard bacteriologic methods with primary isolation on MacConkey, XLD (xylose lysine deoxycholate) agar, and Salmonella–Shigella agar to inhibit the growth of normal flora and growth amplification of Salmonella in celenite broth. [2324] Further biochemical or serological identification was done for the detected Salmonella and Shigella species.…”

Section: Methodsmentioning

confidence: 99%

Intestinal amebiasis: A concerning cause of acute gastroenteritis among hospitalized Lebanese children

et al. 2013

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Background:Intestinal amebiasis is an important public health problem worldwide. More severe disease is associated with young age, malnutrition and immunosuppression.Aim:The aim of this study is to evaluate the prevalence and characteristic nature of intestinal amebiasis among pediatric population, and compare it with other causes of gastroenteritis.Materials and Methods:This is a retrospective comparative study conducted at Makassed General Hospital between January 2008 and December 2012, including all pediatric patients between birth and 15 years of age, who presented with symptoms of acute gastroenteritis.Results:One thousand three hundred ninety-five patients were included in the study, and were divided into four groups: Group I (Entameba histolytica group = 311 cases, 22.3%), group II (Rotavirus group = 427 cases, 30.6%), group III (bacterial group = 107 cases, 7.7%), group IV (unidentified group = 550 cases, 39.4%). Significant leukocytosis, neutrophilia and positive C-reactive protein were found among more than 50% of admitted Entemaba histolytica cases with a picture of severe invasive disease in young infants.Conclusion:Entameba histolytica can be an emerging serious infection, especially when it finds suitable environmental conditions and host factors, so we should be ready to face it with effective preventive measures.

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“…These observations represent a counterintuitive observation not only in view of the direct presence of large numbers of parasites but also because G. duodenalis breaks the epithelial barrier via direct effects on tight junctional proteins (11)(12)(13)(14) and therefore likely facilitates the translocation of potent proinflammatory luminal antigens. In addition, G. duodenalis infections can occur concurrently with other proinflammatory gastrointestinal pathogens, such as Cryptosporidium parvum (15), Helicobacter pylori (16), rotavirus (17,18), and Salmonella (19).…”

Section: G Iardia Duodenalis (Syn G Intestinalis G Lamblia)mentioning

confidence: 99%

Giardia duodenalis Cathepsin B Proteases Degrade Intestinal Epithelial Interleukin-8 and Attenuate Interleukin-8-Induced Neutrophil Chemotaxis

et al. 2014

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Asymptomatic salmonellosis among children in day-care centers in Mérida, Yucatan, Mexico

Abstract: These data indicate the presence of multiple sources of Salmonella infection in the DCC, posing a complex situation for infection control.

Cited by 16 publications

References 16 publications

Profiles of enteropathogens in asymptomatic children from indigenous communities of Mérida, Venezuela

Profiles of enteropathogens in asymptomatic children from indigenous communities of Mérida, Venezuela

Intestinal amebiasis: A concerning cause of acute gastroenteritis among hospitalized Lebanese children

Giardia duodenalis Cathepsin B Proteases Degrade Intestinal Epithelial Interleukin-8 and Attenuate Interleukin-8-Induced Neutrophil Chemotaxis

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